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haleyelizabeth2017
 one year ago
Find the inverse of f(x).
haleyelizabeth2017
 one year ago
Find the inverse of f(x).

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haleyelizabeth2017
 one year ago
Best ResponseYou've already chosen the best response.0\[f(x)=\frac{4}{(x3)^2}\] \[x=\frac{4}{(y3)^2}\] I'm not entirely sure which step to do next.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2you need to find y in terms of x first thing you can do is cross multiply

haleyelizabeth2017
 one year ago
Best ResponseYou've already chosen the best response.0Cross multiply?

haleyelizabeth2017
 one year ago
Best ResponseYou've already chosen the best response.0Cross multiply what?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2dw:1443654010925:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2now divide both sides by x

haleyelizabeth2017
 one year ago
Best ResponseYou've already chosen the best response.0One moment. Let me get to that point :)

haleyelizabeth2017
 one year ago
Best ResponseYou've already chosen the best response.0So I went a little farther than that point, so please correct me if I am wrong :) \[(y3)^2=\frac{4}{x}\]\[y3=\frac{\sqrt4}{\sqrt x}\]\[y=\frac{2}{\sqrt x}+3\]

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2now you just replace the y by f1(x)

haleyelizabeth2017
 one year ago
Best ResponseYou've already chosen the best response.0okay :) and is it a function?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2yes its the inverse of the function f(x)

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2Note you only take the positive square root otherwise it would not be a function

haleyelizabeth2017
 one year ago
Best ResponseYou've already chosen the best response.0okay. thank you!
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