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单选题 函数 f(x) = a^x,其中 a 为正实数且 a ≠ 1,它的导数为 ( )
A. f'(x) = a
ln(a)
B. f'(x) = e ln(a)
C. f'(x) = a lg(e)
D. f'(x) = e lg(a)
学科：默认课程
时间：2025-12-18 21:56:42
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