13.根据定积分的性质及第12题的结论,说明下列各对积分中哪一个的值较大:-|||-(1) ∫。x^2dx还是 x^3dx?-|||-(2) x^2dx还是 ^3dx?-|||-(3) ln xdx 还是 (int )_(1)^2((ln x))^2dx-|||-(4) xdx还是 (int )_(0)^1ln (1+x)dx-|||-(5) e^xdx还是 (int )_(0)^1(1+x)dx

求下列不定积分：int ((3-2x))^3dx求下列不定积分：

[题目]若-|||-=(int )_(0)^2(x)^2dx =(int )_(0)^2(x)^3dx, =(int )_(0)^2sin xdx, 则a,b,

int ln (x)^2dx=-|||-A

[题目]-|||-不定积分 int xsin (x)^2dx= () .-|||-

[单选题]定积分｜x2-3x｜dx等于：（）A . 1B . 2C . 3D . 4

在下列积分中改变累次积分的顺序:-|||-(1) (int )_(0)^2dx(int )_({x)^2x}f(x,y)dy;-|||-(2) (int )_(

int (arcsin x)^2dx$\int (\arcsin x)^{2}dx$

int ((arcsin x))^2dx -

2.求下列不定积分(其中a,b,w,φ均为常数):-|||-(1)int (e)^5tdt;-|||-(2) int ((3-2x))^3dx ;-|||-(3

int_(-3)^3x^3dx=填空题（共3题，15.0分）9.（5.0分）$\int_{-3}^{3}x^{3}dx=$