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Mathematics 31 Online
OpenStudy (xetsdoittt):

Quick Help please? (question inside)

OpenStudy (xetsdoittt):

OpenStudy (itz_sid):

Okay well. First plug in 4 to g(x)

OpenStudy (itz_sid):

What do you get?

OpenStudy (xetsdoittt):

g(4)=x^2

OpenStudy (itz_sid):

Yes so then plug in the number 4 into x^2

OpenStudy (xetsdoittt):

16

OpenStudy (itz_sid):

Yep. So then plus in that number, 16, to f(x)

OpenStudy (xetsdoittt):

f(16)=16-3

OpenStudy (itz_sid):

\[x^{-3} = \frac{ 1 }{ x^3 }\]

OpenStudy (itz_sid):

So plug in 16 into \[\frac{ 1 }{ x^3 }\]

OpenStudy (xetsdoittt):

So, what do you think the solution would be?

OpenStudy (xetsdoittt):

@iTz_Sid

OpenStudy (itz_sid):

Haha, why dont you tell me. Plug in the number 16.\[\frac{ 1 }{ (16)^{3} }\] Use a calculator

OpenStudy (xetsdoittt):

I did but I got 1/4096

OpenStudy (xetsdoittt):

\[\frac{ 1 }{ 4096 }\]

OpenStudy (itz_sid):

Hm... I think i messed up somewhere... lol

OpenStudy (itz_sid):

@zepdrix Help! D:

OpenStudy (will.h):

At 1st we must find the value of g(x) when x= 4 that would be indeed 16 And then substitute x= 16 in the function f(x) so 16^-3 that would equal to 1/16^3 I don't think you messed-up

OpenStudy (itz_sid):

Oh wait f(g(x)) is\[(x^2)^{-3}\]

OpenStudy (itz_sid):

Hm... that would be the same as \[x^{-6} = \frac{ 1 }{ x^6 }\]

OpenStudy (itz_sid):

It should be the same...

OpenStudy (will.h):

I have a question is it x^-3 or x-3 Because if it it x-3 it would explain the option 13 which would be the right one

zepdrix (zepdrix):

=1/4^6 ya this is weird D: I think someone made a boo boo writing this problem.

OpenStudy (itz_sid):

Lmfao

zepdrix (zepdrix):

yaaa x-3 would make sense :D

OpenStudy (will.h):

Indeed

OpenStudy (itz_sid):

Oh thats probably it... lol

OpenStudy (xetsdoittt):

So It'd be 13, correct?

OpenStudy (itz_sid):

Yes, it should be.

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