1.交换积分次序：int_(1)^2dxint_((1)/(x))^xf(x,y)dy.

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.积分int_(0)^1dxint_(x)^1e^-y^(2)dy的值是____1.积分$\int_{0}^{1}dx\int_{x}^{1}e^{-y^{2

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_

（请画图➕解答过程）3.交换积分次序:-|||-(1) (int )_(0)^1dx(int )_(x)^sqrt (x)f(x,y)dy;（请画图➕解答过程）

二重积分(int )_(0)^1dx(int )_((x-1))^2f(x,y)dy,交换积分次序的结果是__________.二重积分交换积分次序的结果是__

6.改换下列二次积分的积分次序:-|||-(5) (int )_(1)^edx(int )_(0)^ln xf(x,y)dy;

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

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}

【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

1.已知 =(x)^2-x, 计算当 =2, Delta x=0.01 时的 Delta y 及dy.