second question:

I tried

The answer given is

How did they get to a answer w/ natural log?

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- October 1st 2010, 12:31 AMugkwanBasic Hyperbolic Simplification b
second question:

I tried

The answer given is

How did they get to a answer w/ natural log? - October 1st 2010, 12:35 AMProve It
Because .

- October 1st 2010, 03:21 AMHallsofIvy
Unfortunate notation- means the inverse function, not the reciprocal!

Specifically, is the value of x such that . Solve that equation for x: . Let so the equation becomes . Multiply both sides by y: or . Solve that equation for y then take the logarithm to find x. - October 1st 2010, 03:23 AMProve It
And you should note that

, not . - October 1st 2010, 01:05 PMugkwan
Thanks for the clarification on this post and the last post. You guys sure know how to explain things in details better than some professors.