1.积分int_(0)^1dxint_(x)^1e^-y^(2)dy的值是____

3.设I=int_(0)^1dxint_(0)^x^(2)f(x,y)dy+int_(1)^2dxint_(0)^2-xf(x,y)dy，则交换积分次序后，I可

1.交换积分次序：int_(1)^2dxint_((1)/(x))^xf(x,y)dy.1.交换积分次序：$\int_{1}^{2}dx\int_{\frac{

267 累次积分 int_(-(pi)/(2))^(pi)/(2)dxint_(0)^sin x(x^2+ycosx)sqrt(1-y^2)dy=A. $\fr

设 iint_(D) f(x, y)dx dy = int_(0)^1 dx int_(0)^1-x f(x, y)dy，则改变其积分次序后为A. $\int_

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) $\int_{0}^{1}e^{\sqrt{x}}dx=$____

(int )_(0)^1dx(int )_(x)^1(e)^-(y^2)dy= () .-|||-

一、计算题8、计算下列二重积分 (9) int_(1)^3dxint_(x-1)^2sin y^2dy一、计算题8、计算下列二重积分 (9) $\int_{1}

计算下列二重积分:-|||-(int )_(0)^1(x)^5dx(int )_({x)^2}^1(e)^-(y^2)dy

【例7.16】已知函数f(t)=int_(1)^t^(2)dxint_(sqrt(x))^tsin(x)/(y)dy,则f((pi)/(2))=____.【例7