Recent content by olechka722

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    How to Find S as a Function of t in Differential Equations?

    That is pretty much what I thought. Thank you! I am going to just do numerical integration.
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    How to Find S as a Function of t in Differential Equations?

    Hi, it has been a little while since I have actually had a course in this, and my math memory is terrible. I would like to find S as a function of t, when the differential relationship is the following: dS/dt= A- (B*S/(S+C))*(D-E*t) where all of the other letters are just constants. What...
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    Deriving Entropy Formula: Thermo Solution

    Hello, I am trying to derive a formula for entropy. I have: dS= Cv/T dT + R/(V-b) dV and want to get: S= Cv*ln(T) + R*ln(V-b) + constant. Math rules seem to say i can't just integrate this up even though it looks obvious since i have two different d's on the right hand side. Maybe...
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    Tricky Differentiation of Derivative

    I am having trouble remembering the correct approach here. This is in regards to deriving a governing equation for conservation of momentum for a non-Newtonian fluid. I thought about posting in engineering, but it is more of a calculus question: d/dx(((-dv/dx)^(m-1))*(dv/dx)) where we are...
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    How is this Statistics Summation Simplified?

    Thanks so much! That really clears things up.
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    How is this Statistics Summation Simplified?

    This equation comes out of deriving the canonical partition function for some system. However, the question is more math based. I am having trouble understanding the simplification that was performed in the text: ∑ from N=0 to M of: (M!exp((M-2N)a))/(N!(M-N)!) supposedly becomes...
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