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Re: Analytical solution possible?


NoISQL = {SI'[t] == (R[t] - a)/(2 a - R[t])/R[t]^2, 
  R'[t] == Cot[SI[t]]/R[t], SI[0] == ArcCos[c/a], 
  R[0] == a + c};  DSolve[NoISQL, {SI, R}, t]

Using above initial condition there is a solution with ArcTan in the argument, But I could not Simplify further.

Using Ver 8.

Regards
Narasimham



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