CHO 0 ; 02 2B B. BCOS 12 COS 1 COS 1X DX  A  BTAN TANDX A B...

Câu 3. Cho 0 ; 0

2 2



 ^B.

_cos ¹

_cos ¹ _cos ¹

x dx  a  b

tan tan

dx a b

A. 1

cos

x  

 ^D.

_cos ¹

^{tan tan}

C. 1

1 1

x dx  b  a

dx b a

cos cos cos

 