vpasolve() returning error:The number of equations exceeds the number of indeterminates. This is allowed only for polynomial systems.

I am trying to solve this. teqsigmavvd is very lengthy equation.

   teqsigmavvd=(0.000045557341656753784472134184253884*abs(0.89789485158332064835768533430604*((d - 1.0*d^(1/2))/(d + d^(1/2)) - (1.0*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2)))/((d - 1.0*d^(1/2))*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)) + 1.0)^2*abs(d^(1/2) - 1.0*d)^4*abs((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2)/(abs(d + d^(1/2))^4*abs((4255.8340196700533106975286133394*(d - 1.0*d^(1/2)))/(d + d^(1/2)) + (3.7944691163519454351367673552897*(d - 1.0*d^(1/2))^2*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806))/((d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2))^2))^2*abs(d - 0.3749799255740448589158120284992)) - 1.0) - 0.0033756762032807659887074650937113*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)^2*((1.374979925574044914426963259757*d)/(d - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) + 0.0033756762032807659887074650937113*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0)^2*((d - 0.3749799255740448589158120284992)^(1/2)/d - 0.47430863954399316018140098094591) - (0.89789485158332064835768533430604*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 0.0033756762032807659887074650937113*(0.74995985114808971783162405699841/(d - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0))^2 + 0.22960900195003907373955628863957*abs(1.8432889022715049894906607957337*((d - 1.0*d^(1/2))/(d + d^(1/2)) - (1.0*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2)))/((d - 1.0*d^(1/2))*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)) + 1.0)^2*abs(d^(1/2) - 1.0*d)^4*abs((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2)/(abs(d + d^(1/2))^4*abs((4255.8340196700533106975286133394*(d - 1.0*d^(1/2)))/(d + d^(1/2)) + (3.7944691163519454351367673552897*(d - 1.0*d^(1/2))^2*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806))/((d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2))^2))^2*abs(d - 0.3749799255740448589158120284992)) - 1.0) - 0.44351537846621730265539440551947*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)^2*((1.374979925574044914426963259757*d)/(d - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) + 0.44351537846621730265539440551947*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0)^2*((d - 0.3749799255740448589158120284992)^(1/2)/d - 0.47430863954399316018140098094591) - (1.8432889022715049894906607957337*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 0.44351537846621730265539440551947*(0.74995985114808971783162405699841/(d - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0))^2 + 0.0019134083495836589478296357386631*abs(1.1411641605020776149466846958615*((d - 1.0*d^(1/2))/(d + d^(1/2)) - (1.0*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2)))/((d - 1.0*d^(1/2))*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)) + 1.0)^2*abs(d^(1/2) - 1.0*d)^4*abs((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2)/(abs(d + d^(1/2))^4*abs((4255.8340196700533106975286133394*(d - 1.0*d^(1/2)))/(d + d^(1/2)) + (3.7944691163519454351367673552897*(d - 1.0*d^(1/2))^2*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806))/((d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2))^2))^2*abs(d - 0.3749799255740448589158120284992)) - 1.0) - 0.017161032581268872239861549782574*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)^2*((1.374979925574044914426963259757*d)/(d - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) + 0.017161032581268872239861549782574*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0)^2*((d - 0.3749799255740448589158120284992)^(1/2)/d - 0.47430863954399316018140098094591) - (1.1411641605020776149466846958615*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 0.017161032581268872239861549782574*(0.74995985114808971783162405699841/(d - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0))^2 + 0.000000063274085634380256211297478130394*abs(0.62667377084647982822959191521466*((d - 1.0*d^(1/2))/(d + d^(1/2)) - (1.0*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2)))/((d - 1.0*d^(1/2))*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)) + 1.0)^2*abs(d^(1/2) - 1.0*d)^4*abs((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2)/(abs(d + d^(1/2))^4*abs((4255.8340196700533106975286133394*(d - 1.0*d^(1/2)))/(d + d^(1/2)) + (3.7944691163519454351367673552897*(d - 1.0*d^(1/2))^2*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806))/((d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2))^2))^2*abs(d - 0.3749799255740448589158120284992)) - 1.0) - 0.00029450103925537177209785329777719*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)^2*((1.374979925574044914426963259757*d)/(d - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) + 0.00029450103925537177209785329777719*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0)^2*((d - 0.3749799255740448589158120284992)^(1/2)/d - 0.47430863954399316018140098094591) - (0.62667377084647982822959191521466*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 0.00029450103925537177209785329777719*(0.74995985114808971783162405699841/(d - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0))^2 + 0.0095670417479182947391481786933156*abs(1.2864989760315610183847584006285*((d - 1.0*d^(1/2))/(d + d^(1/2)) - (1.0*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2)))/((d - 1.0*d^(1/2))*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)) + 1.0)^2*abs(d^(1/2) - 1.0*d)^4*abs((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2)/(abs(d + d^(1/2))^4*abs((4255.8340196700533106975286133394*(d - 1.0*d^(1/2)))/(d + d^(1/2)) + (3.7944691163519454351367673552897*(d - 1.0*d^(1/2))^2*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806))/((d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2))^2))^2*abs(d - 0.3749799255740448589158120284992)) - 1.0) - 0.038693207528938104587288127788041*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)^2*((1.374979925574044914426963259757*d)/(d - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) + 0.038693207528938104587288127788041*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0)^2*((d - 0.3749799255740448589158120284992)^(1/2)/d - 0.47430863954399316018140098094591) - (1.2864989760315610183847584006285*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 0.038693207528938104587288127788041*(0.74995985114808971783162405699841/(d - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0))^2 + 0.00000063274085634380256211297478130394*abs(0.7064848269902931386257783989043*((d - 1.0*d^(1/2))/(d + d^(1/2)) - (1.0*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2)))/((d - 1.0*d^(1/2))*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)) + 1.0)^2*abs(d^(1/2) - 1.0*d)^4*abs((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2)/(abs(d + d^(1/2))^4*abs((4255.8340196700533106975286133394*(d - 1.0*d^(1/2)))/(d + d^(1/2)) + (3.7944691163519454351367673552897*(d - 1.0*d^(1/2))^2*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806))/((d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2))^2))^2*abs(d - 0.3749799255740448589158120284992)) - 1.0) - 0.00066401539507790484253057048941152*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)^2*((1.374979925574044914426963259757*d)/(d - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) + 0.00066401539507790484253057048941152*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0)^2*((d - 0.3749799255740448589158120284992)^(1/2)/d - 0.47430863954399316018140098094591) - (0.7064848269902931386257783989043*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 0.00066401539507790484253057048941152*(0.74995985114808971783162405699841/(d - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0))^2 + 0.038268166991673178956592714773262*abs(1.4503431430952670170858361997331*((d - 1.0*d^(1/2))/(d + d^(1/2)) - (1.0*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2)))/((d - 1.0*d^(1/2))*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)) + 1.0)^2*abs(d^(1/2) - 1.0*d)^4*abs((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2)/(abs(d + d^(1/2))^4*abs((4255.8340196700533106975286133394*(d - 1.0*d^(1/2)))/(d + d^(1/2)) + (3.7944691163519454351367673552897*(d - 1.0*d^(1/2))^2*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806))/((d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2))^2))^2*abs(d - 0.3749799255740448589158120284992)) - 1.0) - 0.087242087665028683172453603593576*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)^2*((1.374979925574044914426963259757*d)/(d - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) + 0.087242087665028683172453603593576*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0)^2*((d - 0.3749799255740448589158120284992)^(1/2)/d - 0.47430863954399316018140098094591) - (1.4503431430952670170858361997331*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 0.087242087665028683172453603593576*(0.74995985114808971783162405699841/(d - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0))^2 + 0.0000056946677070942230590167730317355*abs(0.79646034984568894324981066720091*((d - 1.0*d^(1/2))/(d + d^(1/2)) - (1.0*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2)))/((d - 1.0*d^(1/2))*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)) + 1.0)^2*abs(d^(1/2) - 1.0*d)^4*abs((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2)/(abs(d + d^(1/2))^4*abs((4255.8340196700533106975286133394*(d - 1.0*d^(1/2)))/(d + d^(1/2)) + (3.7944691163519454351367673552897*(d - 1.0*d^(1/2))^2*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806))/((d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2))^2))^2*abs(d - 0.3749799255740448589158120284992)) - 1.0) - 0.0014971643088774724217426966786832*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)^2*((1.374979925574044914426963259757*d)/(d - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) + 0.0014971643088774724217426966786832*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0)^2*((d - 0.3749799255740448589158120284992)^(1/2)/d - 0.47430863954399316018140098094591) - (0.79646034984568894324981066720091*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 0.0014971643088774724217426966786832*(0.74995985114808971783162405699841/(d - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0))^2 + 0.00031890139159727649130493928977719*abs(1.0122477090743241999494070206785*((d - 1.0*d^(1/2))/(d + d^(1/2)) - (1.0*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2)))/((d - 1.0*d^(1/2))*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)) + 1.0)^2*abs(d^(1/2) - 1.0*d)^4*abs((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2)/(abs(d + d^(1/2))^4*abs((4255.8340196700533106975286133394*(d - 1.0*d^(1/2)))/(d + d^(1/2)) + (3.7944691163519454351367673552897*(d - 1.0*d^(1/2))^2*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806))/((d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2))^2))^2*abs(d - 0.3749799255740448589158120284992)) - 1.0) - 0.0076111818601525499119164160184363*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)^2*((1.374979925574044914426963259757*d)/(d - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) + 0.0076111818601525499119164160184363*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0)^2*((d - 0.3749799255740448589158120284992)^(1/2)/d - 0.47430863954399316018140098094591) - (1.0122477090743241999494070206785*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 0.0076111818601525499119164160184363*(0.74995985114808971783162405699841/(d - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0))^2 + 0.11480450097501953686977814431979*abs(1.6350539502270495481489608245487*((d - 1.0*d^(1/2))/(d + d^(1/2)) - (1.0*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)))*((14.397995874948713624411155520761*abs((2.6668094257822782364188013558646*(d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2)))/((d - 1.0*d^(1/2))*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)) + 1.0)^2*abs(d^(1/2) - 1.0*d)^4*abs((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806)^2)/(abs(d + d^(1/2))^4*abs((4255.8340196700533106975286133394*(d - 1.0*d^(1/2)))/(d + d^(1/2)) + (3.7944691163519454351367673552897*(d - 1.0*d^(1/2))^2*((d - 0.3749799255740448589158120284992)^(1/2) + 0.79058211112189669123040403064806))/((d - 0.3749799255740448589158120284992)^(1/2)*(d + d^(1/2))^2))^2*abs(d - 0.3749799255740448589158120284992)) - 1.0) - 0.19670589093603197065205388030138*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)^2*((1.374979925574044914426963259757*d)/(d - 0.3749799255740448589158120284992)^(1/2) + 0.47430863954399316018140098094591) + 0.19670589093603197065205388030138*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0)^2*((d - 0.3749799255740448589158120284992)^(1/2)/d - 0.47430863954399316018140098094591) - (1.6350539502270495481489608245487*(0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2)))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 0.19670589093603197065205388030138*(0.74995985114808971783162405699841/(d - 0.3749799255740448589158120284992)^(1/2) + 0.94861727908798630136342162241978)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) - 1.0)*((0.79058211112189669123040403064806*d - 1.0*(d - 0.3749799255740448589158120284992)^(1/2))/(0.79058211112189669123040403064806*d + (d - 0.3749799255740448589158120284992)^(1/2)) + 1.0))^2);
  tdcvv=sym('tdcvv',[3 3]);
  tic
  for i=1:3
      for j=1:3
          tdcvv(i,j) = vpasolve(teqsigmavvd(i,j),d);
      end
  end
  toc

Answer 1

[Walter Roberson]

There is no solution, so vpasolve() returns 0.

Note: your variable is a symbolic scalar expression, so you will not be able to index it at anything other than (1,1)

[Sandra Maria Cherian]

But when I try solving a single equation I get solution like this:dd=vpasolve(teqsigmavvd(1,1)); >> dd

dd =

-2.6446808681665809730662186595561e419

why I am getting this much big value?

[Walter Roberson]

When I copy your code and try it, I get Empty sym: 0-by-1 .

My tests with your code suggested that for large negative d values, your function has an asymptote at approximately 2.238624002 -- certainly not 0. But it is not out of the question that near the value you indicate, that due to numeric overflow or underflow, the function loses precision and comes out 0.