1X C+ +X 1 C+ X +− B

câu 23: - DE THI THU THPT TRAC NGHIEM TOAN 2017 CO DAP AN
Toán DE THI THU THPT TRAC NGHIEM TOAN 2017 CO DAP AN
Câu 23: Nguyên hàm

2

11 ?x dx

∫

−1x + x− +C D. x

2

+ln x− +1 CC.

2

ln 1A. 1x C+ +x 1 C+ x +− B.

( )

2

2x−

π

∫