Integrating sin(2x) in MATLAB

Introduction:

I'm new to MATLAB and trying to learn how to integrate expressions.

Situation:

The expression to integrate is.....

sin(2x)

I'm entering the following code......

syms x

int(sin(2*x))

The answer MATLAB is displaying is.....

ans =

sin(x)^2

The answer I'm looking for is....... (-1/2)*cos(2x)+c

Answer 1

[Andrei Bobrov]

syms x
out = feval(symengine,'combine',int(sin(2*x)),'sincos')

Answer 2

[Azzi Abdelmalek]

(-1/2)*cos(2x)=(-1/2)*(cos^2(x)-sin^2(x))
              =(-1/2)*(1-sin^2(x)-sin^2(x))
              =(-1/2)+sin^2(x)
              =sin^2(x)+c

The result found by Matlab and yours are the same

[Jan]

@Shane Yost: Interesting, isn't it? Matlab replied the correct result, but you've expected another correct result.