How Graph differential equations with Matlab
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Looking to get some help on how to use matlab to solve the following equation problem 1, all help is appreciated! Thank You! I haven't used matlab in 2 years very rusty, image is reference to original problem statement. List of equations
%%PROBLEM 1
syms y(x)
ode = y*diff(y,x)+36*x == 0;
ySol(x) = dsolve(ode)
ezplot(y(x))
Accepted Answer
Star Strider
on 17 Jan 2018
The integrated equations produce results that are pure imaginary. You have to plot the real and imaginary parts of each solution separately with ezplot. You also have to define the initial condition, y(0).
Try this:
syms y(x)
ode = y*diff(y,x)+36*x == 0;
ySol = dsolve(ode, y(0) == 0)
figure
subplot(2,1,1)
ezplot(real(ySol(1)))
subplot(2,1,2)
ezplot(imag(ySol(1)))
figure
subplot(2,1,1)
ezplot(real(ySol(2)))
subplot(2,1,2)
ezplot(imag(ySol(2)))
3 Comments
More Answers (1)
Ritesh
on 22 Dec 2023
syms y(x) ode = y*diff(y,x)+36*x == 0; ySol = dsolve(ode, y(0) == 0) figure subplot(2,1,1) ezplot(real(ySol(1))) subplot(2,1,2) ezplot(imag(ySol(1))) figure subplot(2,1,1) ezplot(real(ySol(2))) subplot(2,1,2) ezplot(imag(ySol(2)))
1 Comment
Dyuman Joshi
on 22 Dec 2023
Edited: Dyuman Joshi
on 22 Dec 2023
This non-formatted code is copy-pasted from Star Strider's (accepted) answer.
If you want to give an answer, I recommend you provide an original one. This blatantly copied answer will be deleted soon.
And if you had researched a bit to give an original answer, you would have found out the using ezplot is not recommended.
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