Jawabanmu

2014-08-31T20:48:10+07:00
Kalo menurutku
 
integral sin 5x cos 2x dx
= integral 1/2 (sin(5x+2x)+sin(5x-2x)) dx
=int 1/2(sin 7x+sin 3x) dx
=1/2(-1/7cos 7x-1/3 cos 3x) + C
-1/14 cos 7x - 1/6 cos 3x + C

itu pake sin+sin=2 sinxcosx