Integration error while running a script in Matlab 2015

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Sadia
Sadia 2020-10-22
评论： Ameer Hamza 2020-10-24
I am using matlab 2015 and while running the following script file I am getting error: error in sym/subsref(line 771) R_title = ......
please help!
%%%%Script%%%%%
clear all; close all; clc
syms x g L R EIo rho Ao xc mR
psi=(x/L)^2
dpsi=diff(psi,x);
ddpsi=diff(dpsi,x);
xc=0.8*L
me=int((rho*Ao(1-(0.5*x)/L))*(psi)^2,x,0,L)+mR*subs(psi,x,xc);
ke=int(EIo*(1-(0.2*((x/L)^2)))*ddpsi^2,x,0,L)
kg=int(mR*g*(dpsi)^2,x,0,L)
Qv=int((pt*(x/L))*psi,x,0,L)

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Ameer Hamza
Ameer Hamza 2020-10-22
编辑：Ameer Hamza 2020-10-22
me=int((rho*Ao*(1-(0.5*x)/L))*(psi)^2,x,0,L)+mR*subs(psi,x,xc);
% ^ insert * here. It is missing in your code
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Sadia
Sadia 2020-10-24
Thank you Mr. Walter Roberson for such clear explanation. I think the person I asked to run this code in his computer has made pt as veriable but my matlab is still giving error. So i am thinking to install latest version.

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