int _0^piover2(rm e)^2xcos x(rm d)x

(int )_(0)^dfrac (pi {2)}(e)^2xcos xdx

(int )_(0)^dfrac (pi {2)}(e)^2xcos xdx; ;

求 (int )_(0)^dfrac (pi {2)}(e)^2xcos xdx求

求不定积分int((dx)/({{rm e)^x)+({rm e)^-x}}}．求不定积分$\int{\frac{dx}{{{\rm e}^{x}}+{{\rm

int_(0)^a (x^2sqrt(a^2-x^2)),(rm dx)(a>0)$\int_{0}^{a} {x^2\sqrt{a^2-x^2}}\,{\rm

int_(1)^e^2 ((rm dx)/(xsqrt(1+ln x)) )$\int_{1}^{e^2} {\frac{\rm dx}{x\sqrt{1+\l

(6) (int )_(0)^dfrac (pi {2)}(sin )^2xcos xdx;

1.[判断题] 判断：设sin y+int_(0)^x^(2)cos tdt=e^y，则(dy)/(dx)=(2xcos x^2)/(cos y-e^y).（）

设int_(}^)(f(x),rm{d)x =2^x+x+C，则f(x)=(  )A. $${{2^x}\over{\ln 2} }+{{x}\over{2}

不定积分 int (e)^2xcos 3xdx=