Hello Well, thanks a lot. Works great. I did not know the "nsolve" command.
If I am right, there is no command to find all three solutions? φ Am Freitag, 20. Dezember 2019 11:48:03 UTC+1 schrieb Oscar: > > You can use nsolve to find numerical solutions: > ``` > In [10]: nsolve(Eq(sin(x), 0.5*x + 0.2), x, 0) > Out[10]: 0.425436108484597 > ``` > This will find one root at a time starting from an initial guess (I've > used zero). > > Initial guesses -1 and +1 give two other roots. > ``` > In [11]: nsolve(Eq(sin(x), 0.5*x + 0.2), x, -1) > Out[11]: -2.11307244875263 > > In [12]: nsolve(Eq(sin(x), 0.5*x + 0.2), x, +1) > Out[12]: 1.59919364642736 > ``` > > You can get more precise solutions using prec: > ``` > In [15]: nsolve(Eq(sin(x), 0.5*x + 0.2), x, 0, prec=50) > Out[15]: 0.42543610848459725447179186114511470949330179080539 > ``` > > -- > Oscar > > On Fri, 20 Dec 2019 at 10:26, Philipp Gressly Freimann > <[email protected] <javascript:>> wrote: > > > > Hello > > > > I want to solve the following equation numerically between -PI and PI: > > > > sin(x) = 0.5x + 0.2 > > > > [which is similar to sin(x) - 0.5x - 0.2 = 0] > > > > The graph shows me three solutions. Is there a possibility to solve this > equation numerically using sympy? > > > > Thanks in advance > > > > φ > > > > -- > > You received this message because you are subscribed to the Google > Groups "sympy" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected] <javascript:>. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/abc402b1-ac1a-4508-95a8-c13a48483654%40googlegroups.com. > > > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/711fb61d-5b02-4776-a93e-7cd72dec93c5%40googlegroups.com.
