Question

Branly and 100 points

f (x) =x² - 3x - f

find the value of f(1) and f-(2)

f (1) = ______
and f (-2) = _____

Answer 1

for every x in the domain of f, f -1[f(x)] = x, and

for every x in the domain of f -1, f[f -1(x)] = x

Explanation:

Answer 2

f(1) and f(-2) means to replace x in the equation with the number inside the parenthesis and then solve.

f(1) = (1)^2 -3(1) -f = 1 -3 -f = -2-f

f(-2) = (-2)^2 -3(-2) -f = 4 + 6 - f = 10-f