int dfrac (sin sqrt {t)}(sqrt {t)}dt= __

分) 设 (x)=(int )_({x)^2}dfrac (t)(sqrt {1+{t)^3}}dt 求 =(int )_(0)^1xF(x)dx

当 x arrow 0 时，下列无穷小量中阶数最高的是 ( )(A) int_(x^2)^x^3 sqrt(1 - sqrt(cos t)) , dt(B) i

(x)=(int )_(0)^(x^2)dfrac (dt)(sqrt {1+{t)^4}}的单调减少区间是________.的单调减少区间是________.

求下列不定积分(其中a、b、w、φ均为常数):-|||-(5) int (sin ax-(e)^dfrac (x{b)})dx;-|||-(6) int dfr

计算下列各导数:-|||-(1) dfrac (d)(dx)(int )_(0)^(x^2)sqrt (1+{t)^2}dt;-|||-(2) dfrac (d

【题目】-|||-dfrac (d)(dx)(int )_(sin x)^cos xcos (pi (t)^2)dt .

【题目】-|||-dfrac (d)(dx)(int )_(sin x)^cos xcos (pi (t)^2)dt .

int sqrt (x)sin sqrt (x)dx; ;

(3)设L为半圆周 =sqrt (4x-{x)^2-3}, 则 _(1)=(int )_(L)dfrac (1)(sqrt [3]{x)}ds 与 _(2)=(

(B) ^(x^4-2x)-1.-|||-(C) (int )_(0)^(x^2)sin (t)^2dt. (D) sqrt (1+2x)-sqrt [3](1