Info

This question is closed. Reopen it to edit or answer.

how to solve Error using * ?

3 views (last 30 days)
thar
thar on 25 Apr 2014
Closed: MATLAB Answer Bot on 20 Aug 2021
how to solve this problem?
>> syms x
>> y = 0.0002*exp(-2.3077*x).*cos(7.0753*x)+0.0612*exp(-2.3077*x).*sin(7.0753*x)-0.0502*cos(0.35493*x)+.483;
>> diff(y,x,2)
ans =
(316198015299*cos((35493*x)/100000))/50000000000000 - (250931707863*cos((70753*x)/10000)*exp(-(23077*x)/10000))/125000000000 - (682803412259*sin((70753*x)/10000)*exp(-(23077*x)/10000))/250000000000
>> x = [0:0.0001:5];
>> p = (316198015299*cos((35493*x)/100000))/50000000000000 - (250931707863*cos((70753*x)/10000)*exp(-(23077*x)/10000))/125000000000 - (682803412259*sin((70753*x)/10000)*exp(-(23077*x)/10000))/250000000000;
Error using *
Inner matrix dimensions must agree.

Answers (1)

Azzi Abdelmalek
Azzi Abdelmalek on 25 Apr 2014
Edited: Azzi Abdelmalek on 25 Apr 2014
syms x
p = (316198015299*cos((35493*x)/100000))/50000000000000 - (250931707863*cos((70753*x)/10000)*exp(-(23077*x)/10000))/125000000000 - (682803412259*sin((70753*x)/10000)*exp(-(23077*x)/10000))/250000000000;
z=0:0.1:5
out=double(subs(p,z))
plot(z,out)
  2 Comments
thar
thar on 25 Apr 2014
Edited: thar on 25 Apr 2014
I'm tying to use this code to plot the graph
>> x = [0:0.0001:5];
>> p = -40327871461/7812500000*exp(-23077/10000*x).*cos(70753/10000*x)+210444021533/125000000000*exp(-23077/10000*x).*sin(70753/10000*x)+3094107371/500000000000*cos(3511/10000*x);
>> plot(x,p)
>> grid
so that i want to assign values for p
Azzi Abdelmalek
Azzi Abdelmalek on 25 Apr 2014
Look at edited answer

Products

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!