6BBF SINX COSX F SINX COSX   .   .  COSX SINX DX COS...

12) - BAI TAP TICH PHAN CO DAP AN
BAI TAP TICH PHAN CO DAP AN
12)

6

b

f sinx cosx

f sinx cosx

  

.

cosx sinx dx

hoặc

c)

a

/2

cos 2

x

dx

sin

4

4 3 2

4

32

1

3

x

x

(sin

cos

3)