Saturday, November 16, 2013

Solve for x: 9^(7x-9)=5^(9x-9)

9%5E%287x-9%29=5%5E%289x-9%29


Taking ln of both sides leads to:


%287x-9%29%2Aln%289%29=%289x-9%29%2Aln%285%29



which is linear and simplifies to...


x=%289ln5-9ln9%29%2F%289ln5-tln9%29
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