... f'(x)=-sinx f(x)=tanx f'(x)=sec^2x f(x)=a^x f'(x)=a^xlna(a>0且a不等于1 ... (x>0) f(x)=tanx f'(x)=1/cos^2 x f(x)=cotx f'(x)=- 1/sin^2 x ...
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