188 int_(0)^+inftysqrt(x)e^-xdx=

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

(int )_(0)^+infty x(2)^-xdx=( )(int )_(0)^+infty x(2)^-xdx=( )(int )_(0)^+inft

(int )_(0)^1x(e)^xdx= __

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

不定积分int (({e)^x+2)}^3(e)^xdx=()A、 int (({e)^x+2)}^3(e)^xdx=()B 、int (({e)^x+2)}^

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

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

int_(0)^1e^sqrt(x)dx=____30. (3.0分) $\int_{0}^{1}e^{\sqrt{x}}dx=$____

int_(0)^1e^sqrt(x)dx=____13. (4.0分) $\int_{0}^{1}e^{\sqrt{x}}dx=$____

(2) int x(e)^-xdx;