how can I solve it

Using the Symbolic Math toolbox:

a) Find x, y, and z such that

     3x-4y+z-1=0
    x-2y-z-5=0
   4x+y2+2z=1

b) Factorize the following expression:

   6bx - 4ax - 2ax3 + 3bx3 - 6x2 + 2abx2 + abx4 - 12

[Stephan]

What is your attempt so far?

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

[Walter Roberson]

That expression is already factored, under the very reasonable assuption that bx is the name of a single symbolic variable .

Answer 1

[Shubham Rawat]

Hi Mohammed,

For first you can use solve function:

syms x y z
e1 = 3*x-4*y+z-1==0;
e2 = x-2*y-z-5==0;
e3 =  4*x+2*y+2*z==1;
sol = solve([eqn1, eqn2, eqn3], [x, y, z]);
xSol = sol.x
ySol = sol.y
zSol = sol.z

For second you can use factor function:

syms x a b
eq = 6*b*x - 4*a*x - 2*a*x^3 + 3*b*x^3 - 6*x^2 + 2*a*b*x^2 + a*b*x^4 - 12;
factor(eq,x);

Hope this Helps!

[Walter Roberson]

Please do not give complete solutions for homework assignments.