设f(x)可导f'(0)=0,又limf'(x)\x=-1(x趋向于0),则f(0)一定是f(x)的极值吗?
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设f(x)可导f''(0)=0,又limf''(x)\x=-1(x趋向于0),则f(0)一定是f(x)的极值吗?设f(x)可导f''(0)=0,又limf''(x)\x=-1(x趋向于0),则f(0)一定是f
设f(x)可导f'(0)=0,又limf'(x)\x=-1(x趋向于0),则f(0)一定是f(x)的极值吗?
设f(x)可导f'(0)=0,又limf'(x)\x=-1(x趋向于0),则f(0)一定是f(x)的极值吗?
设f(x)可导f'(0)=0,又limf'(x)\x=-1(x趋向于0),则f(0)一定是f(x)的极值吗?
f'(x)=-x 当x>0时f'(x)
不一定是,当原函数是f(x)=-x