Hello All,

A problem in my calc. book asks to integrate [4 sin x + 2 cos x].

I get: -4 cos x + 2 sin x + C

The book, however, lists the answer as: -4 cos x + sin x + C

Is the book correct? I don't understand what happens to the 2 in '2 cos x', during integration.

Thanks,

InkHorn