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設:lim(x->x0)f(x)= A > 0,求證:lim(x->x0)√f(x)=√A【為證明確定,取x->x0時的極限,其他極限過程雷同;√a表示a的立方根³;√a】證明:①對任意ε>0,∵lim(x->x0)f(x)= A > 0…
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