Examples of Math Problems

examples of math problems that I like, solved, etc.

Wednesday, May 8, 2013

if 4^x+4^x-1=10 find x


%0D%0A4%5Ex%2B4%5Ex-1=10%0D%0A

%0D%0A2%2A4%5Ex=11%0D%0A

%0D%0A4%5Ex=11%2F2%0D%0A

%0D%0Alog%284%5Ex%29=log4%289%2F2%29%0D%0A

so...
%0D%0Ax%2Alog%284%29=log%289%2F2%29%0D%0A
or

%0D%0Ax=%28log%289%29-log%282%29%29%2Flog%284%29%0D%0A

:)
Posted by Unknown at 3:54 PM
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Labels: Exponential Equations, Logarithmic Equations, My Algebra.com posts

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