求int dfrac (x+1)(xsqrt {x-4)}dx.

求int xsqrt (x-1)dx.求.

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

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

13.求不定积分 int dfrac (1)(1-sqrt {x+1)}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

求(int )_(1)^+infty dfrac (dx)(xsqrt {2{x)^2-1}}=求

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

求int dfrac (cos x)(sin x+cos x)dx.求.

求int dfrac (sqrt {{x)^2-9}}(x)dx.求.