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数学
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设函数f(x)在点x=a可导,求[f(a+5h)-f(a-3h)]/2h
人气：449 ℃ 时间：2019-08-22 17:31:27
解答
f(a)‘=[f(a+5h)-f(a-3h)]/8h
[f(a+5h)-f(a-3h)]/2h=4f(a)‘
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