Question

If f(x) = 7x + 12, what is f–1(x)?

Answer 1

whats f^-1(x)

Answer 2

Let y=f(x)
then y=7x+12
Find x in term of y.
f-1(x) is inverse function
if x using f(x) map to y
then y using f-1(x) map to x

Answer 3

??

Answer 4

http://en.wikipedia.org/wiki/Inverse_function
for more information

Answer 5

@Stephanizer Did you understand?

Answer 6

no

Answer 7

Okay I'll explain you

Answer 8

okay thanks(:

Answer 9

We are give
\[f(x) = 7x + 12\]
We need to find
\[f^{-1}(x)\]
One Important thing to remember is
\[f^{-1} [f(x)]=f[f^{-1} (x)]=x\]
Do you get this part?

Answer 10

not really i get the first part then i just get confused:/