设f(x)=0,则f(x)在x=0可导的充要条件是A.lim h趋近于0 1/h[f(h)-f(-h)]存在 B.lim h趋近于0 1/h^2f(cosh-1)存在 C.lim h趋近于0 1/h[f(1-e^2h]存在 D.lim h趋近于0 1/h^2f(h-sinh)存在说清楚原因
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![设f(x)=0,则f(x)在x=0可导的充要条件是A.lim h趋近于0 1/h[f(h)-f(-h)]存在 B.lim h趋近于0 1/h^2f(cosh-1)存在 C.lim h趋近于0 1/h[f(1-e^2h]存在 D.lim h趋近于0 1/h^2f(h-sinh)存在说清楚原因](/uploads/image/z/10366933-13-3.jpg?t=%E8%AE%BEf%28x%29%3D0%2C%E5%88%99f%28x%29%E5%9C%A8x%3D0%E5%8F%AF%E5%AF%BC%E7%9A%84%E5%85%85%E8%A6%81%E6%9D%A1%E4%BB%B6%E6%98%AFA.lim+h%E8%B6%8B%E8%BF%91%E4%BA%8E0+1%2Fh%5Bf%28h%29-f%28-h%29%5D%E5%AD%98%E5%9C%A8+B.lim+h%E8%B6%8B%E8%BF%91%E4%BA%8E0+1%2Fh%5E2f%28cosh-1%29%E5%AD%98%E5%9C%A8+C.lim+h%E8%B6%8B%E8%BF%91%E4%BA%8E0+1%2Fh%5Bf%281-e%5E2h%5D%E5%AD%98%E5%9C%A8+D.lim+h%E8%B6%8B%E8%BF%91%E4%BA%8E0+1%2Fh%5E2f%28h-sinh%29%E5%AD%98%E5%9C%A8%E8%AF%B4%E6%B8%85%E6%A5%9A%E5%8E%9F%E5%9B%A0)
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