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Topic: Analytical solution possible?
Replies: 2   Last Post: Nov 12, 2013 12:05 AM

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Murray Eisenberg

Posts: 2,105
Registered: 12/6/04
Re: Analytical solution possible?
Posted: Nov 11, 2013 11:29 PM
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I tried this in Mathematica 9.0.1 and DO get the expected message
Solve::ifun : Inverse functions are being used by Solve. . . and,
furthermore, obtain a rather long solution that is expressed in terms of
some InverseFunction expressions.

What version were you using?

On Nov 11, 2013, at 12:05 AM, Narasimham <> wrote:

> NoISQL = {SI'[t] == (R[t] - a)/(2 a - R[t])/R[t]^2,R'[t] ==
Cot[SI[t]]/R[t]}; DSolve[NoISQL, {SI, R}, t]

Murray Eisenberg
Mathematics & Statistics Dept.
Lederle Graduate Research Tower
University of Massachusetts
710 North Pleasant Street
Amherst, MA 01003-9305

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