lim {sin3x+xf(x)}/x^3(x趋向于0)求f(0),f'(0),f’’(0)
lim {sin3x+xf(x)}/x^3(x趋向于0)求f(0),f'(0),f’’(0)
若lim[x/f(3x)]=2(x趋向于0),则lim[f(2x)/x]=?(x趋向于0)
设lim(X趋向于0) f(2X) / X等于2/3 则lim(X趋向0) X/ f(3X)等于?
设f'(x0) 存在,求lim[ f(x0-x)-f(x0)]/x,x趋向于0
求极限,x趋向于0,lim((tan2x)/(sin3x))
求极限,lim(x趋向于0+)(根号(1+tan2x)-根号(1-tan2x))/sin3x
lim X趋向于0 arcsin2x/sin3x
lim(x趋向于0)arctan2x/sin3x
求lim(x→0)[(xf'(x))/(2f(x))]^(1/x),其中f(x)在x=0点某邻域内有三阶连续导数,f(0
x趋向于0 lim f(x)/x=0
lim(x趋向于0) f(x)-f(-x)/x 存在 且函数在x=0出连续,为什么f(0)=0?
如何证明:limf(x)=0( x趋向于X)的充分必要条件是lim|f(x)|=0 (x趋向于X). 灰常感谢~