当 x > (pi)/(2) 时，int_((pi)/(2))^x ((sin t)/(t))' , dt = ( )

(d)/(dx)int_(sin x)^cos x cos(pi t^2) , dt = ( ). $\frac{d}{dx}\int_{\sin x}^{\c

已知函数F(x)=int_((pi)/(2))^x(sin t)/(t)dt，则一阶导数值F((pi)/(2))=（ ）A. $\frac{2}{\pi}$B.

10 若 f(x)= int_(0)^2xf((t)/(2))dt+4, 则 int_(0)^pi f(x) sin xdx= ___.10 若 $f(x)=

设 M=int_(-(pi)/(2))^(pi)/(2) (sin x)/(1+x^2) cos^4 x dx，N=int_(-(pi)/(2))^(pi)/(

(2)已知函数f(x)=int_(0)^sin xsin t^2dt,g(x)=int_(0)^sin xf(t)dt,则A. f(x)是奇函数,g(x)是奇函

(2)已知函数f(x)=int_(0)^sin xsin t^2dt,g(x)=int_(0)^sin xf(t)dt,则（）A. f(x)是奇函数,g(x)是

【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 .

已知 f(x) 可导且 F(x)=int_(0)^x^2 f(t) , dt，则 F(x)= ________.例2. 设 p(x)=int_(1)^sin x

(4)int_((pi)/(4))^(pi)/(3)(x)/(sin^2)xdx;(4)$\int_{\frac{\pi}{4}}^{\frac{\pi}{3}