Inverse Function

**AlexWilson94** · December 7th 2011, 05:19 PM

Hey guys, here's the problem:

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I know how to do an inverse, I'm just having a very difficult time with this set of numbers.. Thank you so much!

**pickslides** · December 7th 2011, 05:32 PM

For $y= \frac{1}{\sqrt{x^2-1}}$ swap y and x, then solve for y.

**Quacky** · December 7th 2011, 05:37 PM

Brief tangent: am I the only person that found the wording of "verify the correctness of your answer" to be highly amusing?

**AlexWilson94** · December 7th 2011, 05:47 PM

Haha, yeah my teacher is pretty intense..

So, after swapping, I'm having a hard time doing the algebra..

**Quacky** · December 7th 2011, 05:58 PM

At first glance, I'd consider multiplying through by the denominator, then squaring both sides.

**pickslides** · December 7th 2011, 06:46 PM

Quacky's idea is good, What did you get AlexWilson94?

**AlexWilson94** · December 7th 2011, 07:00 PM

**pickslides** · December 7th 2011, 07:05 PM

Looks good well done!

**AlexWilson94** · December 7th 2011, 07:08 PM

Sweet! Would you mind helping me out with another problem I posted, it's in this same section on Cramer's Rule!

Thread: Inverse Function