Question

For the function f(x) = x2 ­ -12, find (f o f­-1)(4)





A. 0


B. 6


C. 4


D. 10

Answer 1

I need help bad please

Answer 2

Do you have any ideas or clues?

Answer 3

not any

Answer 4

no I'm sorry I have 20 questions to finish by tomorrow morning and I didn't know quite a few of them I don't understand and ive tried watching youtube videos on how to do some and even tried google and nothing has helped

Answer 5

?

Answer 6

Ok I got it!

Answer 7

okay and how did you find out what it was?

Answer 8

Wait... is the problem asking for (f ○ f(-1))(4)?
Or this?\[(f○f^{-1})(4)\]

Answer 9

the second one

Answer 10

Okay, well. Are you aware of what the little symbol ○ means?

Answer 11

no

Answer 12

Alright then, maybe we should start from there...
That symbol means "of". So f ○ g means "f of g", or f(g).\[(f○g)(x)\rightarrow(\text{"f of g"})(x)\rightarrow f(g(x))\]With me so far?

Answer 13

this is so confusing

Answer 14

Is that a complaint or feedback on my explanation? Either works xD

Answer 15

lol you just seem way smarter then ill ever be I'm literately just pass school by a inch

Answer 16

Naw. I suck at school. This is just old stuff that I love doing xD

Answer 17

ive never been the bright one in learning

Answer 18

It's okay. Everyone's got their talents ☺

Answer 19

true

Answer 20

So are you understanding my explanation so far?
Recap

Answer 21

yes

Answer 22

Okay.

Sorry I got tag-pulled into the biology forum lol

Answer 23

its ok lol

Answer 24

Okay. Well, the problem here is\[(f○f^{-1})(4)\]so that leads to\[(f(f^{-1}(4))\]

Answer 25

ok

Answer 26

f^-1(x) is also 1/f(x) btw. So\[f(f^{-1}(4))\rightarrow f\left(\frac{1}{f(4)}\right)\]Do you see something that can cancel out there?

Answer 27

the 4

Answer 28

No, sorry

Answer 29

this is way to hard I'm just going to guess lol I'm tired and ive been at this all day but thank u anyways :)

Answer 30

It's okay. Everyone learns at their own pace. ☺