题目

— You are always full of           . Can you tell me the secret ?    — Taking  plenty of exercise every day . A. power              B. Strength            C. force         D. energy 答案:D函数f(x)=a2x-ax+b  x∈[-1,2],若f (0)=1,f (1)=34,求(1)f (x)的解析式  (2)f (x)的值域 (3)f (x)的单调区间.
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