Friday

July 25, 2014

July 25, 2014

Posted by **Candy** on Saturday, June 19, 2010 at 5:49am.

- engineering -
**Damon**, Saturday, June 19, 2010 at 6:39amIf the change of something tends to be proportional to its present value, exponential fit works best.

dx/dt = k x

dx/x = k dt

ln x = k t + c

e^ln x = e^(kx+c)

x = e^kx * e^c

x = C e^kx

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