On Saturday, November 2, 2013 11:46:27 AM UTC+1, Saullo Castro wrote: > > I believe we can make a variable transform and then apply the derivative > using the expression converted to a variable, like: > > x = a**2 + c + d**3 > x.diff((a + c**2)) > > changing variables: > > v = a + c**2 > a = v - c**2 > c = (v-a)**0.5 > > the new x will be: > > x2 = (v-c**2)**2 + (v-a)**0.5 + d**3 > > and the derivative could be computed as: > > x2.diff(v) > > is that reasonable? >
Yes, it is. Are you going to use .subs( ) or solve( ) ? -- 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. For more options, visit https://groups.google.com/groups/opt_out.
