I have a problem in plotting ilaplace!!

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Iqbal Batiha
Iqbal Batiha 2023-6-15
评论： Iqbal Batiha 2023-6-16
I have a problem in plotting ilaplace!! Any help?
clear, clc;
syms s t
C11=-0.0564834; C12= 0.249474;
C21= -1.22098; C22=-0.577793;
U(s)=vpa(( (2.7671-C11./C21).*s -(1./C21).*s.^3 )/( -s.^4./C21 -( (C22-C11)./C21 ).*s.^2 + C12-C11.*C22./C21 ));
u(t)=vpa(ilaplace(U(s)));
figure;
fplot(u(t),[0 3])
  2 个评论
Manas
Manas 2023-6-15
Hi Iqbal,
What problem are you facing with your code?
Dyuman Joshi
Dyuman Joshi 2023-6-15
Ran in:
The code seems to be working fine here.
Do you have the Symbolic toolbox which is required to run the code?
syms s t
C11=-0.0564834;
C12= 0.249474;
C21= -1.22098;
C22=-0.577793;
U(s)=vpa(((2.7671-C11./C21).*s -(1./C21).*s.^3 )/(-s.^4./C21 -( (C22-C11)./C21 ).*s.^2 + C12-C11.*C22./C21));
u(t)=vpa(ilaplace(U(s)));
figure;
fplot(u(t),[0 3])

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采纳的回答

Dyuman Joshi
Dyuman Joshi 2023-6-15
@Iqbal Batiha, First check if your license has access to the Symbolic Toolbox. Run this command and check the output -
status = license('checkout','Symbolic_Toolbox')
If status is 1, then you can proceed further - Go to Home tab of the toolstrip, you will see an option Add-ons, click on it and a window will open, where you can search and download the Symbolic toolbox.
If status is 0, you need to purchase the Symbolic toolbox to access it.
  7 个评论
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Dyuman Joshi
Dyuman Joshi 2023-6-16
There will be a blue button under my name and picture named "Accept this answer", just click on it.

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更多回答（2 个）

Iqbal Batiha
Iqbal Batiha 2023-6-15
Hello dear Dyuman Joshi,
Thanks a lot for your quick reply... It seems that all the matter depends on Symbolic toolbox!! So, how I can install it?
Thanks again dear
Iqbal Batiha
Iqbal Batiha 2023-6-15
Hello Manas
Thanks a lot for reply.
Maybe the problem lies on Symbolic toolbox!!
Could you please help me in this matter?

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