I need help *** if someone can get back to me you will get a medal!! really need help lost

- anonymous

I need help *** if someone can get back to me you will get a medal!! really need help lost

- chestercat

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- amistre64

Post the question you need help with, and not an advertisement to "swap answers" please

- anonymous

what quiz

- anonymous

ok for the function 32 over x+3 find (g^-1*g(5)

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## More answers

- anonymous

Graphing Radical Functions Quiz
'

- amistre64

what is the value of g(5)?

- anonymous

Sorry it soupposed to be (g^-1*g)(5)

- anonymous

I dont remeber that, srry I take Geometry and Id ont rmeber how to solve

- anonymous

it does not say what g equals

- amistre64

im pretty sure g is the name of the function they gave you

- amistre64

\[g(x)=\frac{32}{x+3}\]

- anonymous

ok so i multiply that funtion by itself to the -1 power?

- amistre64

the -1 notation here denotes the inverse of the function .. not really a power

- amistre64

do you know how to find an inverse?

- anonymous

not really

- amistre64

given a function
\[y=\frac{32}{x+3}\]
the inverse swapps x and y, so the inverse of this is
\[x=\frac{32}{y+3}\]

- anonymous

so now i divide?

- amistre64

lets work the inverse a little more .. just so things loook normal
\[x=\frac{32}{y+3}\]
\[y+3=\frac{32}{x}\]
\[y=\frac{32}{x}-3=g^{-1}(x)\]

- amistre64

so, \[g^{-1}*g=(\frac{32}x-3)(\frac{32}{x+3})\]
plug in x=5 and find the product

- anonymous

4

- anonymous

now what? would i times 4 by 5?

- amistre64

not if your following what ive written ....

- anonymous

the answer choices are 11 5 2 and 1 so ???

- anonymous

what now

- anonymous

sorry i am not good at this

- amistre64

hmm, you sure thats a "*" in between them or is it more of an "\(^o\)"

- anonymous

an o

- amistre64

ahhh, that changes things, the open "o" means a composite, not a multiplication of the 2 of them

- amistre64

g^(-1) o g has a property that the input is the same as the output

- anonymous

could you check out the math chat box it may need to be controlled.

- amistre64

it needs the adminstrators to come online and deal with the isp itself .. so that the whole school gets banned

- amistre64

so if the input is 5, what is the output?

- anonymous

5?

- anonymous

-5

- amistre64

yes, if the input is 5, the output is 5 ... its a special property of composing inverses of each other

- anonymous

what school. Cant you bn them if they need

- anonymous

so if there is an o don't multiply make input sam as output?

- amistre64

only if the functions are inverses of each other does that work. If they are not inverses the input and output can be different

- anonymous

brb domestic situation at house have to help brother

- amistre64

good luck ::)

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