JAMB - Mathematics (1980 - No. 36)
If a function is defined by f(x + 1) = 3x2 - x + 4, Find f(0).
4
6
9
8
2
Explanation
f(x + 1) = 3x2 - x + 4
f(0) = f(x + 1)
x + 1 = 0 ===> x = -1
f(0) = 3(-1)2 - (-1) + 4
f(0) = 3 + 1 + 4
= 8
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