Plotting a result from dsolve

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Sergio Manzetti
Sergio Manzetti el 8 de Ag. de 2017
Comentada: Shantanu Gupta el 6 de En. de 2021
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

Respuesta aceptada

Elizabeth Reese
Elizabeth Reese el 10 de Ag. de 2017
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);
  1 comentario
Shantanu Gupta
Shantanu Gupta el 6 de En. de 2021
Is it possible to put the condition latter? How to plot in that case.

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