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求解！謝謝！

Q 0-3. 若函數f(x) = x,則f'(x) 的定義域為 (1).(-1, ∞) (2).[-1,∞) (3)(0,0] (4).以上皆非

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✨ Best Answer ✨

qn
qn

f⁻¹(x)的定義域就是f(x)的值域
也就是 (-∞,∞)

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