Question

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

Answer 1

So first, you need to find \(f^{-1}\). Any ideas?

Answer 2

Nope, My brother is going to help teach me this later tonight, but right now I'm just in a time crunch to turn in this little quiz.

Answer 3

I appreciate the honesty, but I do not assist on quizzes. Best of luck, I suggest looking on khan or purplemath for directions

Answer 4

It's not actually a quiz in honesty. On FLVS you have to take these things called "exams" in reality they are just the same as normal assignments but are strictly multiple choice. I can submit it up to 3 times, so it's not really a test or a quiz. @FibonacciChick666

Answer 5

Also, the available answers are,

1. 1
2. 8
3. 10
4. 27

Answer 6

alright alright, so \(f^{-1}\), what you want to do is swap the x and the y then resolve for y

Answer 7

http://www.sosmath.com/algebra/logs/log4/log45/log45.html
for more help

Answer 8

@zale101, you really shouldn't just solve the whole thing. People will never learn if you do

Answer 9

I actually learn from watching it be done, not being taught it step by step. Much thanks @Zale101

Answer 10

i understand, but explaining it will help

Answer 11

If someone has no idea where to begin, then how do you expect them to learn ?

Answer 12

I expect them to work with me, get it wrong a few times, fix it themselves and solve it for themselves in the end. Maybe show them a similar problem with concepts they can apply to this problem

Answer 13

I thought you'd do that, but since you gave the user a summary on what to do but not "how" to do it. I thought I might as well just give him the whole explanation and end it. Therefore, thanks for correcting my mistake, and you're right. Explain step-by-step is the main process on learning the concept !

Answer 14

Oh no Zale where did your answer go I didn't get to write all of it down @Zale101

Answer 15

lol let's begin by solving the equation step by step. Ready?

Answer 16

I would be but I need to turn this and two other assignments in by 12 tonight so the best help would be just solving it and showing the steps. I have like another two questions left on this assessment after this one, then I have other school work to do.

Answer 17

@Zale101

Answer 18

i'm about to leave now, i'm really sorry. Your reply was a little late i suppose

Answer 19

@FibonacciChick666

Answer 20

So, what does \(f^{-1}\) represent?