8、定积分 (int )_(0)^1(x+1)(e)^(x^2+2x)dx= __ 。-|||-__

定积分(int )_(0)^1sqrt (2x-{x)^2}dx=( )(int )_(0)^1sqrt (2x-{x)^2}dx=( )(int )_(0

求定积分：∫(;)_(0)^2f（x）dx，其中f（x）={x+1，x≤1)(1)/(2){x)^2，x＞1}.．求定积分：∫${\;}_{0}^{2}$f（x

(int )_(0)^1dfrac (x+2)(sqrt {x+1)}dx=( )(int )_(0)^1dfrac (x+2)(sqrt {x+1)}dx=

不定积分 int dfrac (x+1)({x)^2-2x+4}dx=-|||-___________._________.

计算下列定积分。-|||-(int )_(0)^1x(e)^-dfrac ({x^2)(2)}dx

计算定积分(int )_(0)^1dfrac (x)(x+1)sqrt (1-{x)^2}dx.计算定积分.

8.求下列不定积分:-|||-(2) int dfrac (x+1)({x)^2+x+3}dx ;

4.求不定积分int(x+1)/((x-1)(x^2)+1)^(2)dx.4.求不定积分$\int\frac{x+1}{(x-1)(x^{2}+1)^{2}}d

int dfrac ({(x+1))^2}({x)^2}dx=

定积分(int )_(0)^1dfrac (2)({e)^-x+5}dx=_____.定积分_____.