Why isn't my integration using Trapezoidal Rule working?

Hi,

I am a newbie at matlab and was wondering why the following code was not working. The problem is asking me to integrate using trapezoidal rule/method for this function.

The code I wrote was:

x = pi/4:2:pi/3; y = x./((sin(x)).^2); z = trapz(x, y);

When I run the code, I get the following errors:

Error in trapz (line 43) y = permute(y,perm);

Error in assignmenttesting (line 3) z = trapz(x, y);

Please help

Answer 1

[Roger Stafford]

The problem lies in the line

   x = pi/4:2:pi/3;

It has only one point and 'trapz' is not happy with that. Try something like

   x = linspace(pi/4,pi/3,100);

to get 100 points.

[Kimberly Kepke]

It worked, thank you! You the best