COS8 .SINX XDX BẰNG

Câu 18:



c

os8 .sin

x

xdx

_bằng:

1

1

1

sin 8 . os

os9

os7

os7

os9





18

c

x



14

c

x C



8

x c x C



8

x c x C

14

c

x



18

c

x C



A)

D)

C)

B)

sin 2xdx

2



_bằng: