SOLUTION: Hi Can I have some help with the following function? A function f is given. f(x) = √6x - 8 (a) Find f -1.

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Question 128569: Hi Can I have some help with the following function?
A function f is given.
f(x) = √6x - 8

(a) Find f -1.

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Is this what the function looks like: ?


Start with the given equation


Plug in


Multiply


Subtract


If you have not learned about imaginary numbers, then this is where you would stop. If you have, then...


Simplify the square root





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OR


Is this what the function looks like: ?


Start with the given equation


Plug in


Multiply


Simplify the square root


Rearrange the terms

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