设f(0)=0且f'(0)=2,求limx→0f(x)/sin2x

设函数f(x)可导,且f′(3)=2,求lim(x→0)[f(3-x)-f(3)]/2x 设函数 f(x)可导,且f'(3)=2,求 x->0 lim [f(3-3)-f(3)]/2x 还是高数~崩溃崩溃~设f'(x)存在,且Lim(x->0) {f(1)-f(1-x)}/2x = -1,求f'(1). 设f(x)是多项式,且lim(x→∞)[f(x)-x^3]/x^2=2,且lim(x→0)f(x)/x=1,求f(x) 设lim（x→0）[f(x)-3]/x^2=100,求lim(x→0)f(x) 设f(x0)存在,试用导数定义求下列极限 lim(x→0)f(x)/x,其中f(0)=0,且f'(0)存在 设y=f(x)在点x0处可导,且f(x0)为最大值,求lim△x→0 f(xo+△x)-f(x0)/△x 设函数f(x)在点x=a可导,且f(a)不等于0,求lim(x趋向无穷)[(f(a+1/x)/f(a)]^x 设f(x)是可导函数且f(0)=0,F(x)=∫t^(n-1)f(x^n-t^n)dt,求lim(x→+∞)F(x)/x^2n设f(x)是可导函数,且f(0)=0,F(x)=∫t^(n-1)f(x^n-t^n)dt,求lim(x→+∞)F(x)/x^2n答案是f'(0)/2n求详解 设f'(x)=2,求极限lim(x~0)[f(1-x)-f(1+x)]/x 设f(x)有二阶导数,在x=0的某去心邻域内f(x)≠0,且lim f(x)/x=0,f'(0)=4,求lim (1+f(x)/x)^(1/x) 设函数f(x)在(a,+∞ )上可导,且lim(x->+∞ )(f(x)+f'(x))=0,证明:lim(x->+∞ )f(x)=0 设函数f(x)在x=0处具有二阶导数,且f(0)=0,f’(0)=1,f’’(0)=3,求极限lim(x->0)(f(x)-x)/x^2 设函数f(x)在x=0处具有二阶导数,且f(0)=0,f’(0)=1,f’’(0)=3,求极限lim(x->0)(f(x)-x)/x^2 设f(x)为可导函数,且满足lim[f(1)-f(1-x)]/2x=-2,x趋于0时,求曲线y=f(x)在点（1,f(1)）处的斜率 设f(x)为可导函数,且满足lim[f(1)+f(1-x)]/2x=-1,x趋于0时,求曲线y=f(x)在点（1,f(1)）处的斜率 设f(x)可导,且满足lim（x→0）f(1)-f(1-x)/2x=-1,求曲线y=f(x)在点(1,f(1))出的切线方程 设f(x)在x=0的某一邻域内二阶可导,且lim(x-->0)f(x)/x=0,f''(0)=2.求lim(x-->0)f(x)/x^2因为f(x)在x=0处二阶可导从而连续且lim(x-->0)f(x)/x=0为什么能得到lim(x-->0)f(x)=f(0)=0.请详细解释,多谢