Returning implicit solution instead of explicit solution?
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I tried solving a differential equation

I wrote the code
syms y(x)
ode = diff(y,x) == ((y/x)*cos(y/x))/((x/y).*sin(y/x)+cos(y/x))
ySol(x)= dsolve(ode)
The software is returning implicit solution instead of explicit one but I tried it on Wolfram but it returned an explicit solution. Please help me..
Risposte (1)
Walter Roberson
il 28 Ott 2017
0 voti
Wolfram Alpha does not return an explicit solution for this.
It returns Log[Sin[y[x]/x]] + Log[y[x]/x] == -Log[x] + Subscript[c, 1]
which is an implicit solution.
3 Commenti
Karan Gill
il 30 Ott 2017
Additional comment: I think the implicit solution from dsolve could be more helpful. Will follow up on this.
Gopalkrishna Pai
il 11 Nov 2017
Walter Roberson
il 11 Nov 2017
The code such that the warning does not appear would just consist of turning the warning off, running the same program as above and failing to get a useful solution, and then turning the warning back on again.
Either the ODE has no explicit solution, or else the explicit solution is beyond the abilities of MATLAB, Maple, and Mathematica.
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