定积分int_(0)^(pi)/(4)sec^2xdx=

计算定积分 int_(0)^pi sin xdx= ( )A. 1B. -1C. 2D. -2

(int )_(0)^dfrac (pi {4)}(tan )^2xdx=1-dfrac (pi )(4) __-|||-__下列式子或叙述不正确的是A.B.设

(4)int_((pi)/(4))^(pi)/(3)(x)/(sin^2)xdx;(4)$\int_{\frac{\pi}{4}}^{\frac{\pi}{3}

定积分(int )_(0)^dfrac (pi {2)}(e)^xsin xdx的值是(int )_(0)^dfrac (pi {2)}(e)^xsin xdx

[题目]定积分 (int )_(0)^pi xcos xdx= __

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

4.计算不定积分int xsin^2xdx4.计算不定积分$\int x\sin^{2}xdx$

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

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

10 若 f(x)= int_(0)^2xf((t)/(2))dt+4, 则 int_(0)^pi f(x) sin xdx= ___.10 若 $f(x)=