# Linear Algebra

posted by Who would know

which of the following functions is the inverse of F(X)=3x
F(X)=-3X
F(X)=X (cubed)****
F(X)= X/3
This function does not have an inverse.
Thank you!

1. bobpursley

http://www.coolmath.com/algebra/16-inverse-functions/05-how-to-find-the-inverse-of-a-function-01

2. Bosnian

Replace F(x)with y
y = 3 x

Interchange the variables

x = 3 y Divide both sides by 3

x / 3 = y

y = x / 3

Replace y with F(x)

F(x)= x / 3

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