Question

please solve this problem in notebook for better understanding and also those who wants add their name in brainlist and please solve also which i send 2 minutes before ​

Answer 1

Answer:

inv f =  √(x - 2)

Step-by-step explanation:

ƒ(x) = y = x2 + 2

ƒ -1 (x) — ?

1. Let's solve given equation for x

y = x2 + 2

x2 = y - 2 Important condition: y - 2 ≥ 0 ---> y ≥ 2

x = √ (y - 2)  

2. Let's "switch" places for "x" and "y"

y =  √(x - 2)  with important condition: x ≥ 2 and y ≥ 0  —  the inverse function to the original one.