(15)int (x)^3(ln )^2xdx;

(int )_(0)^+infty (x)^3(e)^-2xdx= __

15) int tan^10xcdotsec^2xdx;15) $\int \tan^{10}x\cdot\sec^{2}xdx;$

3.求下列不定积分.-|||-(15) int (tan )^10x(sec )^2xdx

(9) int xtan^2xdx;(9) $\int x\tan^{2}xdx;$

int t(e)^-2tdt.-|||-.int (ln )^2xdx-|||-.int xsin xcos xdx.-|||-15. int (x)^2(co

(15)|cot^2xdx;

定积分 (int )_(1)^2xdx=(x)^2+C ( ) ○正确 ○错误定积分( )○正确 ○错误

[题目]计算: (int )_(-2)^2sin 2xdx= __

int ((x)^2-1)sin 2xdx.-|||-18. int dfrac ({ln )^3x}({x)^2}dx.

(5) int (tan )^10xcdot (sec )^2xdx;