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I need help with this problem:

4^x + 4^-x = 5/2

My Solution: (Assume we use log with base 4)

log ( 4^x + 4^-x) = log(5/2)

= log (4^0) = log (5/2) ????

I dont see what I am doing wrong. I used the Product Rule. Any help would be greatly appreciated.

Thanks

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# Simple log problem

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