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2.已知函數f(x)=2x2-7,下列敘述何者正確?(A) f(1)=5 (B) f(-2)=-15 (C) f(1)+f(-1)=-10 (D) f(1)+f(-2)=0
問題詳情
2.已知函數f(x)=2x2-7,下列敘述何者正確?
(A) f(1)=5
(B) f(-2)=-15
(C) f(1)+f(-1)=-10
(D) f(1)+f(-2)=0
參考答案
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