So I was going through some old tests of mine and found this problem in an old precalculus test from long ago. I of course did not get it right and I don't think anyone did. Here's the problem:(adsbygoogle = window.adsbygoogle || []).push({});

Use natural logarithms to solve 2 = [e^x - e^(-x)]/2 for x.

I tried every little trick I know...I have no idea how to get this. Can you believe this was asked on a test in a precalculus course (along with tons and tons of other questions)!?

I don't know if this thread belongs in the homework section or not. It seems like it but this is actually not a homework assignment.

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# How on earth do I solve this?

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