I am very new to Matlab and I am trying to graph y'=ky, y(0) = A. Can anyone assist?

I am very new to Matlab and I am trying to graph y'=ky, y(0) = A.

Can anyone assist?

Answer 1

[Walter Roberson]

syms y(t) k A
Y = dsolve(diff(y)==k*y,y(0)==A);
YY = subs(Y, [A,k], [randn()*50,randn()/2]);
fplot(YY, [-10 10])

[JB]

It seems like my computer crashes every time I enter these commands in my command window. Thoughts?

[Steven Lord]

For the Symbolic issue, see this Answer.

To solve the system of ODEs numerically, use ode45. Note that you will need to specify a numeric value for k to use ode45.

[JB]

For anyone reviewing this question and would like to get the latest update installation please visit the link here:

Download R2018a Update 3 Installer

V/R jb

[JB]

@Steven_Lord: The recent update worked well.

@Walter_Roberson: Your code worked perfectly after I installed the latest update.

Thank you both. V/R jb