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2^x-2^-x/3=4
jibbajbr
Posts: 1, Reputation: 1
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#
1
Feb 14, 2013, 06:22 AM
2^x-2^-x/3=4
I need to solve for x and have no clue what I'm doing
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ebaines
Posts: 12,131, Reputation: 1307
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2
Feb 15, 2013, 07:12 AM
Please clarify- do you mean:
or:
?
Solving the first involves solving a 4th order polynomial: let
and you get
. Solve for u, then
Solving the second is easier. Let
, which leads to
, which can be solved with the quadratic formula. Then
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