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Alternative to bivariate Taylor series

  • To: mathgroup at
  • Subject: [mg44634] Alternative to bivariate Taylor series
  • From: koshi man <man_koshi at>
  • Date: Tue, 18 Nov 2003 06:42:09 -0500 (EST)
  • Sender: owner-wri-mathgroup at

Is there any expansion to log(1+exp(x-y)) other than
Taylor series in the integer powers of x and y ? 

I'm trying to find expectation of above function given
x, y are random variables with gaussian distributions
of known  mean and variances.

What about other bivariate expansions in Mathematica?


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