Naomi R.

asked • 05/30/17

One-to-one

Suppose f(x) is one-to-one and all expressions below are defined.
 
If f(3)=2, what is f-1(2)?
 

1 Expert Answer

By:

Kemal G. answered • 05/30/17

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Naomi R.

Isn't this just repeating my question? Do you substitute the (3) for f? I'm confused as to how to set this up?
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05/30/17

Kemal G.

It may seem like I am repeating your question but I provided you the formal definition of inverse function in the first line. 
I used x and y instead of numbers. 
Your function is taking 3 and yielding 2. When the inverse of the function takes 2, it will yield 3. 
Does this make sense?
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05/30/17

Naomi R.

Ok that makes sense, thank you for explaining further.
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05/30/17

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