Let f(x)=(x+4)/(x+6) f^(-1)(-5)=?

Marley Meyers

Marley Meyers

Answered question

2022-10-24

Let f ( x ) = x + 4 x + 6
Find f 1 ( 5 ) = ?

Answer & Explanation

inmholtau5

inmholtau5

Beginner2022-10-25Added 16 answers

Solution:
f ( x ) = x + 4 x + 6 f ( x ) = y x + 4 x + 6 = y
Intercahnge variables
y + 4 y + 6 = x y + 4 = x y + 6 x y = 2 ( 3 x 2 ) 1 x f 1 ( x ) = 2 ( 3 x 2 ) 1 x f 1 ( 5 ) = 2 ( 3 ( 5 ) 2 ) 1 ( 5 ) = 17 3

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