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T S Singh


Last seen: 1 month ago |  Active since 2016

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Find real positive roots of 9th order polynomial
Hi, I am trying to find the real positive roots of a 9th order polynomial equation using roots . My program is given below cle...

4 years ago | 1 answer | 0

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Question


Check whether the symbolic eigen value of a matrix is positive or negative
I am calculating the eigen value of 2x2 matrix symbolically, and checking whether the two eigen values are negative or not using...

4 years ago | 1 answer | 0

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Question


Calculate the length of symbolic expression
Hi, I am trying to caculate the total length of a symbolic expression. Eg. syms x a b df=x^2+2*a*b I want to cacluale the ...

5 years ago | 1 answer | 0

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Question


Find coefficients after rearranging harmonic terms
I am trying to find the coefficients of sin(w*t), cos (w*t), sin(2*w*t) and cos(2*w*t) in the expression 'f' Here is the code ...

6 years ago | 1 answer | 0

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Implicit function 2D plot
I am trying to plot a function of the form y=f(x,y) That is y as a function of x. Any help? Thanks

6 years ago | 1 answer | 0

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How to calculate the coefficients of non-polynomial terms
I am trying to find the coefficients of non-polynomial terms For example syms x a=-9*cos(x)*4+x*9+4*sin(x) I want ...

6 years ago | 1 answer | 0

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Problem in setting Yaxis value
I am using MATLAB 2015a. After going through the Q&A I finally wrote the command lines to set the Yaxis values as exponent, but ...

6 years ago | 2 answers | 0

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answers

Answered
complex roots of a transcendental equation
See this link https://in.mathworks.com/matlabcentral/fileexchange/6924-newtzero it might help you. If this does not help the...

7 years ago | 0

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Doubt in coding a systems of ODEs with bvp4
I have a coupled ODE in terms of two variables x and y, x''''=A*x+B*y+C*y''''; y''''=D*y+E*x+F*x''''; Given with 8 boundary c...

7 years ago | 1 answer | 0

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Question


I am trying to solve a nonlinear coupled partial differential equation using Implicit-explicit (IMEX) schemes in MATLAB, can anyone please provide me some basic tutorials on IMEX method ?
Every study materials and research papers cites this paper: *U. M. Ascher, S. J. Ruuth, and B. T. R. Wetton. Implicit-explicit ...

7 years ago | 0 answers | 0

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How to solve a boundary value problem (differential equations) which contains dependent variable values at the boundary??? The equation is like a integro-differential equation.
(-iy+y'''')=(A+Bx)y'''(0)+(C+Dx)y''(0) # Here A,B,C and D are constants. # y'''(0) are the dependent variable 3rd order deri...

7 years ago | 1 answer | 0

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Question


Error using bvp4, "singular Jacobian", when I am decreasing the value of a parameter of my equation
I am solving a set of linear equations (reduced from a fourth order differential equations with variables coefficients) using bv...

8 years ago | 0 answers | 0

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Question


I am new to partial differential equation toolbox of MATLAB, the equation I am trying to solve is a system of non-linear coupled partial differential of higher order and the coefficients are variable.
I have attached a pdf copy describing the equations, someone please suggest me how to solve these equations in MATLAB????

8 years ago | 0 answers | 0

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Answered
does anyone have the "leap frog" algorithm matlab script?plz help i need it!
You can try the following code. Its an application of Leap Frog Algorithm applied to Simple harmonic Motion close all ...

8 years ago | 0