Try this, >>> exp(5*x).xreplace({exp(5*x): sin(5*x)}) sin(5*x)
On 14 August 2015 at 00:24, Adrián Ashley <adbi...@gmail.com> wrote: > Hello, > > How can I substitute/replace something mathematically from an expression: > > For example: > > >>> exp(5*x).xreplace({exp(x): sin(x)}) > >>> exp(5*x) # I would expect sin(x)**5 here > > > In better way to do the above thing? > > Thanks, > Best, > > -- > Adrian > > -- > 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 sympy+unsubscr...@googlegroups.com. > To post to this group, send email to sympy@googlegroups.com. > Visit this group at http://groups.google.com/group/sympy. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/4be0109e-a665-4c89-8774-0300163250f0%40googlegroups.com > <https://groups.google.com/d/msgid/sympy/4be0109e-a665-4c89-8774-0300163250f0%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- Regards *Sartaj Singh* *Mathematics and Computing*, Indian Institute of Technology, Varanasi - 221 005 INDIA E-mail: singhsarta...@gmail.com, *sartaj.singh.ap...@itbhu.ac.in <sartaj.singh.ap...@itbhu.ac.in>* -- 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 sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAC%2BH8-HzZUGkmaNz5F73qmEOArQDQwOQx%2BnpY4TPtyOkOp5exQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.