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Math Forum » Discussions » Software » comp.soft-sys.math.mathematica

Topic: How to solve or approximate a first order differential equation ?
Replies: 5   Last Post: Nov 29, 2011 6:30 AM

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dinodeblasio@gmail.com

Posts: 23
Registered: 10/14/07
How to solve or approximate a first order differential equation ?
Posted: Nov 26, 2011 4:39 AM
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Hello everyone,

I have this first order differential equation:

y'[t] = -A (y[t])^2 + B (C - y[t])

where A and B are unknown constants and C is known constant.
One condition is y[0]==0

A and B should be determined by fitting a list of {y[i],t[i]} values.

For this reason i would like to approximate my differential equation
with a function which I could use to fit the data and find A and B.

I don't know how to do this.
Any help is highly appreciated.

Thanks,

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