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Topic:
Power equation
Replies:
4
Last Post:
Apr 26, 2012 5:58 PM




Re: Power equation
Posted:
Apr 26, 2012 1:22 PM


On Thursday, April 26, 2012 10:47:43 AM UTC5, Diogo Alves wrote: > In the following equation: > > c = sum_i( ( p(i)^a ) * b(i) ) / sum_i( p(i)^a ) > > "c", "p(i)" and "b(i)" are known. > How do I calculate "a"?
Write f(x) = sum_i( ( p(i)^x ) * b(i) ) / sum_i( p(i)^x )  c and use a numeric technique such as Newton's Method to solve the equation f(x) = 0.
Dave



