desolve y'=(x+y)^2

05012015, 04:41 PM
Post: #4




RE: desolve y'=(x+y)^2
Funny, yesterday I had a similar Problem to solve, nearly the same diffeq, clearly that didn't work. So I did the Substitution u=x+y by hand, after that I entered the new equation in desolve and it worked. Itried then mathexplorer on my mobile, it didn't solve either equation. I think that this little trick can easily be implemented to the CAS.
Hth Arno 

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