若f(x)的一个原函数是F(x)，则int f(3x-1)dx=()int f(3x-1)dx=()int f(3x-1)dx=()int f(3x-1)dx=()int f(3x-1)dx=()

求-|||-(1) (int )_(-1)^1f(x)dx;-|||-(2)f(x)dx;-|||-(3) (int )_(3)^-1g(x)dx;-|||-(

设int_(-1)^13f(x)dx=18，int_(-1)^3f(x)dx=4，int_(-1)^3g(x)dx=3。则int_(-1)^3(1)/(5)[4

[题目]-|||-若 int f(x)dx=F(x)+C, 则 int f(2x-3)dx= __ .

设(int )_(-1)^13f(x)dx=9 , (int )_(-1)^13f(x)dx=9 , (int )_(-1)^13f(x)dx=9， 则 (in

(3)若 int f(x)dx=(x)^2+C, 则 int xf(1-(x)^2)dx= __ ;

(1)下列等式中正确的是-|||-()-|||-(A) int f(x)dx=f(x) (B) int df(x)=f(x)-|||-(C) dfrac (d)

若 int f(x^3)dx = x^3 + c，则 f(x)= ___。A. $x + c$B. $\frac{9}{5}x^{\frac{5}{3}} +

设 f ( x ) 是连续奇函数且(int )_(0)^1f(x)dx=-2 则 (int )_(0)^1f(x)dx=-2设f(x)是连续奇函数且则

int f(x), dx = xe^x + C，则 int f(2x), dx = ( )A. $2xe^{2x} + C$B. $2xe^x + C$C. $

若 int f(x)dx = sin x + C，则 int xf(1-x^2)dx = ( )A. $2\sin(1-x^2)+ C$B. $-\frac{1