已知 f(0)=1 ,f(2)=3 ,f'(2)=5 ,则 (int )_(0)^2xf''(x)dx= ()-|||-(A)12; (B)8; (C)7; (D)6.

设 f(2)=4 , (int )_(0)^2f(x)dx=1, 则 (int )_(0)^2xf(x)dx=

设f(x)为连续函数，则(int )_(0)^1f(dfrac (x)(2))dx等于( )．(int )_(0)^1f(dfrac (x)(2))dx设f(x

2.设 (x)=2, 且 f(0)=0 ,则 int f(x)dx= __-|||-

已知 (x)cdot (int )_(0)^2f(x)dx=8, 且 (0)=0, (x)geqslant 0, 则 f(x)= __

2、设f`(x)为连续函数,则 int (sin )^2xf(cos x)dx-int cos xf(cos x)dx=

设f(x)=e^2x，则f(0)=（）A. 1B. 0C. 8D. 2

【题目】若 f(x) 为连续函数,则∫f(2x)dx=()(A)f(2x)+C(B)f(x)+C(c) 1/2f(2x)+C(D)2f(2x)+C【题目】若 f

6、单选-|||-f-|||-A .lim _(harrow 0)dfrac (f({x)_(0)+5h)-f((x)_(0)+2h)}(h)=f((x)_(0

已知 f(x)在 [1, 4] 可导, f(4)= 1, int_(0)^4 xf(x), dx = 3，则 int_(0)^4 f(x), dx = (

若 int f(x^3)dx = x^3 + c，则 f(x)= ___。A. $x + c$B. $\frac{9}{5}x^{\frac{5}{3}} +