设严格单调函数y=f(x)有二阶连续导数,其反函数为x=varphi (y),且f(1)=1,(f)(1)=2,(f)^(1)=3,则(varphi )^(1)
已知函数f(x)在(-∞, +∞)内可导,且恒有f (x)=0,又有f(-1)=1,则函数f(x)= ()A. 0B. xC. -1D. 1
(5)如果函数f(x)在点x0可导,且取得极值,则 ((x)_(0))= __
设函数f(x)在[0,1]上连续,在(0,1)内可导,且f(x)<0,则( )A. f(0)<0B. f(1)>0C. f(1)>f(0)D. f(1)<f(
设函数f(x)在[0,1]上连续,在(0,1)内可导,且f(x)<0,则( )A. f(0)<0B. f(1)>0C. f(1)>f(0)D. f(1)<f(
F(x)= f(x), f(x) 为可导函数,且 f(0)=1,又 F(x)= xf(x)+ x^2,则 f(x)= ( )A. $-2x-1$;B. $-x^
[例3] 设可导函数 y=y(x) 由方程 sin x-(int )_(x)^yvarphi (u)du=0 确定,其中可导函数-|||-varphi (u)g
4.设函数f(x,y)可导,且 f(1,-1)=-1 _(1)(1,-1)=2 _(2)(1,-1)=3, 又 F(x)=-|||-f[x^2,f(x^2,x
1.设f(x)为可导函数,且 lim _(xarrow 0)dfrac (f(1)-f(1-x))(2x)=-1 ,则 f(1)= __
30.-|||-设函数 y=f(x) 是单调的可导函数,且 (x)=dfrac (1)(sqrt {4+{x)^2}} f(0)=3 则反函数 =(f)^-1(