Question

If f (x) = x² − 1 and g (x) = 4x − 3, find [f o g] (3) .

Answer 1

(f ￮ g)(3) = 80

Explanation:

evaluate g(3) then substitute the value obtained into f(x)

g(3) = 4(3) - 3 = 12 - 3 = 9 , then

f(9) = 9² - 1 = 81 - 1 = 80