# trig

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Solve for X. Leave answers in logarithmic forms.

3^(2-x) = 2^x

Thanks.

• trig -

take the logs of both sides
log (3^(2-x)) = log (2^x)
(2-x)log3 = xlog2
2log3 - xlog3 = xlog2
2log3 = xlog2 + xlog3
2log3 = x(log2 + log3)
x = 2log3/(log2 + log3)
or x = 2log3/log6

• trig -

Ok, I'm kind of confused.

A log's base typically 10 right? Why would you write log 3^(2-x)? Shouldn't it be log(sub3) 2-x) ?

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