int_(-3)^3x^3dx=

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

I=int_(-1)^1x^2(1+sin^3x)dx=A. -1B. 1C. $\frac{1}{3}$D. $\frac{2}{3}$

I=int_(-1)^1x^2(1+sin^3x)dx=A. -1B. 1C. $\frac{1}{3}$D. $\frac{2}{3}$

int_(-3)^3ln(3+x)/(3-x)dx=题型说明：17.（5.0分）$\int_{-3}^{3}\ln\frac{3+x}{3-x}dx=$

求下列不定积分：int ((3-2x))^3dx求下列不定积分：

26.简答题证明int_(L)(3x^2+2xy^3)dx+(3x^2y^2+2y)dy与积分路径无关，并求int_((-2,-1))^(3,0)(3x^2+2

int dfrac (sin x)({cos )^3x}dx=______.______.

(13 ) int dfrac (sin x)({cos )^3x}dx;

( 13 int dfrac (sin x)({cos )^3x}dx ;

(3) int_(4)^9 sqrt(x)(1+sqrt(x))dx;(3) $\int_{4}^{9} \sqrt{x}(1+\sqrt{x})dx;$