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Question
Functions f , g: R → R are defined, respectively, by f(x) = x 2 + 3x + 1, g(x) = 2x – 3, find g o f
Solution
Given, f(x) = x2 + 3x + 1, g(x) = 2x – 3
gof = g(f(x))
= g(x2 + 3x + 1)
= 2(x2 + 3x + 1) – 3
= 2x2 + 6x – 1
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