cheesecake191ii cheesecake191ii
  • 23-08-2019
  • Mathematics
contestada

Determine whether the following functions are inverses.
F(x)=1/2x-11 and g(x)=2x+22

Respuesta :

jimrgrant1 jimrgrant1
  • 23-08-2019

Answer:

f(x) and g(x) are inverses

Step-by-step explanation:

To determine if the 2 functions are inverses

If f(g(x)) = g(f(x)) = x then f(x) and g(x) are inverses

f(g(x)) = f(2x + 22)

= [tex]\frac{1}{2}[/tex] ( 2x + 22) - 11 = x + 11 - 11 = x

and

g(f(x)) = g([tex]\frac{1}{2}[/tex] x - 11 ) + 22

= 2 ([tex]\frac{1}{2}[/tex] x - 11 ) + 22 = x - 22 + 22 = x

Hence f(x)) and g(x)) are inverses

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