设f"(a)存在, (a)neq 0 ,则 lim _(xarrow a)[ dfrac (1)(f(a)(x-a))-dfrac (1)(f(x)-f(a))
10、甲四-|||-设 y=f(x) 由参数方程 =-|||-(453)-|||-A .dfrac {f({e)^3t-1)}(f(2t))-|||-B .
(2)若f(x)有连续的导数,则 int f(3x)dx= () .-|||-(A) f(x)+C (B) f(3x)+C-|||-(C) 3f(3x)+C (
设 (x)=(e)^-x, 则 int dfrac (f(ln x))(x)dx= .(x)=(e)^-x, 则 int dfrac (f(ln x))(x)
15 设f(a)存在,f(a)neq0.则lim_(xto a)[(1)/(f(a)(x-a))-(1)/(f(x)-f(a))]=____.15 设$f''(
若 int f(x^3)dx = x^3 + c,则 f(x)= ___。A. $x + c$B. $\frac{9}{5}x^{\frac{5}{3}} +
C. lim _(xarrow 0)dfrac (f(x))(x) 不存在.-|||-f(0)=0 ^11(0)=2.-|||-D.f(0)是f(x)的极小值.
3、若f(x)=f(-x),且在[0,+∞)内f(x)>0,f(x)>0,则在(-∞,0)内必有( )A. f'(x)0,f''(x)0,f''(x)>0
设函数f(x)具有2阶导数,且f(0)=f(1),|f(x)|leq1。证明:(1) 当xin(0,1)时,|f(x)-f(0)(1-x)-f(1)x|leq(
。-|||-8.设 f(x)= ,xgt 0, 0,x=0, dfrac {1-cos {x)^2}(x),xlt 0, .-|||-x=0,求f(x),