[中學] 不等式
已知f(x)為一次函數。若當35<=x<=49時，2<=f(x)<=6，且f(0)>0，
則下列敘述何者正確？
(A)f(3)>6
(B) 0<f(3)<2
(C) f(200)>6
(D) 0<f(200)<2
我的問題此一出題是否有瑕疵
"2<=f(x)<=6"沒有說為f(x)的範圍，
直接當作f(x)的範圍似乎不恰當
依題意來說我舉"f(x)=0.01x+2"就沒有一個是正確的
我的想法有錯嗎？
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