Hi sage: solve((x - 20)/sqrt((x - 20)^2 + 100) + x/sqrt(x^2 + 25) == 0, x, to_poly_solve=True) [x == (20/3)]
Robert M. On 6 dub, 15:09, Danread5 <danre...@me.com> wrote: > Hi all, > > My first post... > > I seem to be having trouble with solving for x in the following: > > sage: d = sqrt(x^2 + 5^2) > sage: D = sqrt((20-x)^2 + 10^2) > sage: T = d + D; T > sqrt(x^2 + 25) + sqrt((x - 20)^2 + 100) > sage: diff(T, x) > (x - 20)/sqrt((x - 20)^2 + 100) + x/sqrt(x^2 + 25) > sage: solve((x - 20)/sqrt((x - 20)^2 + 100) + x/sqrt(x^2 + 25) == 0, > x) > [x == 20*sqrt(x^2 + 25)/(sqrt(x^2 + 25) + sqrt(x^2 - 40*x + 500))] > > For some reason, Sage isn't solving completely for x, or isn't > 'seeing' the x^2... > > Any help gladly appreciated! > > Dan -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org To unsubscribe, reply using "remove me" as the subject.
