數學(Functions)@4

2009-02-06 3:57 am
Consider f(2x) = 4x^2 - 6x + 7

(a) Find f(a)

回答 (1)

2009-02-06 4:00 am
✔ 最佳答案
f(2x) = 4x^2-6x+7
= (2x)^2-3(2x)+7
So, f(x) = x^2-3x+7
f(a) = a^2-3a+7


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