(1,0 ®IÓM) C©U 5 Π Π0,50 (2,0 ®IÓM) =∫4 =∫4I COS X SIN XDX SIN XD(S...
1. (1,0 ®iÓm) C©u 5
π
π
0,50 (2,0 ®iÓm) =∫
4
=∫
4
I cos x sin xdx sin xd(sin x)0
0
π
1 1 2 12
4
2
I= sin x = [( ) -0]= .2 2 2 4 0,500
π
π
0,50 (2,0 ®iÓm) =4
=4
I cos x sin xdx sin xd(sin x)0
0
π
1 1 2 12
4
2
I= sin x = [( ) -0]= .2 2 2 4 0,500