1 (CĐHP 06) (CĐ YT 06)X1 SIN 2 01 X2/ 4COS 2X DXLN(X DX

71.

1

(CĐHP 06) (CĐ YT 06)x1 sin 2

0

1 x

2

/ 4

cos 2x dx

ln(x dx