desolve y'=(x+y)^2

[salvomic]

(05-04-2015 07:15 AM)parisse Wrote:  Check that version() returns 1.2.0. If not, you must install the unstable version.

as I noted above, I had xcas 1.1.4-19 (c) 2000-14
now I've installed 1.2 unstable and with the general equation I get
\[ \frac{\mathrm{c\_1} \sin\left(x\right)-\mathrm{c\_2} \cos\left(x\right)-\mathrm{c\_1}\cdot x \cos\left(x\right)-\mathrm{c\_2}\cdot x \sin\left(x\right)}{\mathrm{c\_1} \cos\left(x\right)+\mathrm{c\_2} \sin\left(x\right)} \]
then, with trigtan() ->

\[ \frac{-\mathrm{c\_1}\cdot x+\mathrm{c\_1} \tan\left(x\right)-\mathrm{c\_2}\cdot x \tan\left(x\right)-\mathrm{c\_2}}{\mathrm{c\_1}+\mathrm{c\_2} \tan\left(x\right)} \]

(trying your advise, \( \mathrm{desolve}\left(y'=(\left(x+y\right)^{2}),x,y=(-x+i)\right) \) the result is \( [-x+i,\frac{4}{4\cdot \mathrm{c\_1} e^{-2*i\cdot x}+2*i}-x+i] \))

***
I tried also the Windows version, but the stable is still 1.1.4.19 also...