Question

If f(x) = log3 (x + 1), what is f−1(2)?

Answer 1

the question is a little vague.. please specify

Answer 2

1, 8, 10, or 27

Answer 3

The answers are what I just typed, they are the ones to pick from atleast... I ma just utterly stuck on this equation.

Answer 4

its okay. are you sure its asking for f-1(2)?

Answer 5

no sorry hold on it's f^-1 (2)

Answer 6

hey i have that same problem

Answer 7

.o. @naahhbass algebra two?

Answer 8

yehh for my worksheet

Answer 9

also is the 3 of log 3 the base or coefficient?

Answer 10

base

Answer 11

see that changes the problem. give me a sec

Answer 12

okki dokki

Answer 13

okay so the answer is 1

Answer 14

but here is how you get it:
calculating the log is not the problem. its how to to get to f^-1(2) that throws you off?

Answer 15

yes it is

Answer 16

its simple. so if you look at f^-1(2).. you can also write it as \[\frac{ 1 }{ f(2) }\]

Answer 17

so you just calculate f(2) as it is:
\[f(2)= \log_{3} (2+1)= \log_{3} 3 = 1 \]

Answer 18

and 1/1 is 1

tadaaa c:

Answer 19

Awesome thank you so very much!

Answer 20

you are welcome