Question

If f(x) = x+3/3 , then what is f-1(x)

Answer 1

u mean \(f^{-1}(x)\) the inverse function?

Answer 2

yes

Answer 3

to find the inverse function u have to solve for \(x\) the following equation
\[ \large y=f(x)=\frac{x+3}{3} \]

Answer 4

try it!

Answer 5

i still don't understand

Answer 6

when u have y=f(x) u get a value for y every time you plug in some value for x.

Answer 7

for instance if x=2 then
\[ \large y=f(2)=\frac{2+3}{3}=\frac{5}{3} \]

Answer 8

the idea is to the same the other way around. given a value of y find the corresponding (if it exists) value of x

Answer 9

that's the inverse and to get that u have to solve the equation i told u

Answer 10

oh okay thank you

Answer 11

solve the equation and tell me what u get

Answer 12

is it 1 over 3x plus 1?

Answer 13

no

Answer 14

u have the equation
\[ \large y=\frac{x+3}{3} \]
try to isolate \(x\)