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Plotting a result from dsolve

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Sergio Manzetti
Sergio Manzetti 2017년 8월 8일
댓글: Shantanu Gupta 2021년 1월 6일
Hi, I'd like to add a plotting command for the result of
syms h g
h = 1
g = 4
dsolve('h^2*(D2v)+2*i*g*h*Dv-g^2=0','v(0)=x')
How can this be done?
Thanks

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Elizabeth Reese
Elizabeth Reese 2017년 8월 10일
I am not sure what x is in this case, but you should be able to use fplot or fplot3 to plot the function. You may need to constrain it some more to eliminate the constant terms or define what x should be, but those are the functions that can take the output of dsolve and plot it. I have made a little example below based on the dsolve documentation example.
syms y(t) a b;
a = 1; b = 4;
eqn = diff(y,t,2) == a^2*y;
Dy = diff(y,t);
cond = [y(0)==b, Dy(0)==1];
ySol(t) = dsolve(eqn,cond);
fplot(ySol);
  댓글 수: 1
Shantanu Gupta
Shantanu Gupta 2021년 1월 6일
Is it possible to put the condition latter? How to plot in that case.

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