Question

let f(x)=5x+12. find f^1(x)

Answer 1

write again clearly

Answer 2

let f(x)= \[\frac{ 24 }{ 3x-2 } find f(-2)\] @zith

Answer 3

What did you get, @allie_bear22 ? Plug in -2 for x and simplify. :)

Answer 4

In the denominator you'll have

3(-2)-2 = ?

Answer 5

my answer is \[\frac{ 5 }{ x-12 }\]

Answer 6

no bear put -2 in place of x and then solve

Answer 7

I don't think it's clear what the problem is... the function posted in your original question is completely different from the one 2 posts below it, lol.

Answer 8

thats it

Answer 9

answer is -3

Answer 10

im sorry i posted it wrong let my try again lol

Answer 11

let f(x)=5x+12. find \[f^1\](x)

Answer 12

f'(x)=5

Answer 13

is it \[\large f ^{-1}(x)\]the inverse function?

Answer 14

yea

Answer 15

no i think its derivative

Answer 16

want to see the options?

Answer 17

if it's the inverse, switch and solve: change x for y and then solve for y.

\[x=5y+12\]\[x-12=5y\]\[y=\frac{ x-12 }{5 }\]

Answer 18

oh ok i get it thank you

Answer 19

She was just asking how to evaluate f(-2) for a given function. I doubt she's doing derivatives?.....

Answer 20

You're welcome. :)