Question

If ƒ(x ) = 2x, then ƒ ^-1(x ) = ?

-2x
1/2x
or x-2

Answer 1

Ooo your f is fancy, it has a tail :D

Answer 2

Your function is this variable x being `multiplied by` 2.
So your inverse will simply be the variable x `divided by` 2.

Answer 3

If you prefer, you can be a little more mechanical about it,\[\large\rm f(x)=2x\]\[\large\rm y=2x\]Switch your y and x,\[\large\rm x=2y\]Solve for y, dividing by 2,\[\large\rm \frac12x=y\]

Answer 4

Your hilarious @zepdrix Just had to say it. You're in great hands @Red3134

Answer 5

\(\large\rm \color{salmon}{\text{Welcome to OpenStudy! :)}}\)

Answer 6

lol :3

Answer 7

@zepdrix Thank you for your explanation!