Indeed. But no need for Mathematica : sage: f(x)= sqrt(2+sqrt(2+sqrt(2+2*cos(5*sqrt(x)+4))))*x^(-1/2) sage: h(x)= 2*cos(5/8*sqrt(x)+1/2)/sqrt(x) sage: P1=plot(f(x),(x,0,120),ymin=-0.5, ymax=0.85) sage: P2=plot(h(x),(x,0,120),ymin=-0.5, ymax=0.85) sage: P1+P2
[image: tmp_a7yhgbnu.png] BTW: How did you came to exhume a 4-years old thread ? Le samedi 24 août 2019 14:17:48 UTC+2, Rodrigo Sambade Saá a écrit : > > Dear William, > > Andrew is wrong > <https://www.wolframalpha.com/input/?i=2*cos%285%2F8*sqrt%28x%29%2B1%2F2%29%2Fsqrt%28x%29+%3D+sqrt%282%2Bsqrt%282%2Bsqrt%282%2B2*cos%285*sqrt%28x%29%2B4%29%29%29%29*x%5E%28-1%2F2%29> > . > > Best wishes, > > Rodrigo > > El jue., 12 feb. 2015 a las 21:57, William Stein (<wst...@gmail.com > <javascript:>>) escribió: > >> On Thu, Feb 12, 2015 at 12:55 PM, R. Andrew Ohana >> <andre...@gmail.com <javascript:>> wrote: >> > It is wrong, but not as wrong as you make it out to be. Your function >> is f = >> > abs(h), where h = 2*cos(5/8*sqrt(x)+1/2)/sqrt(x). Rather that >> integrating f, >> > it seems to have integrated h. >> >> Andrew -- very good point! That's not nearly as bad as I made it out. >> Thanks, >> >> -- William >> >> > >> > -- >> > You received this message because you are subscribed to the Google >> Groups >> > "sage-support" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> an >> > email to sage-s...@googlegroups.com <javascript:>. >> > To post to this group, send email to sage-s...@googlegroups.com >> <javascript:>. >> > Visit this group at http://groups.google.com/group/sage-support. >> > For more options, visit https://groups.google.com/d/optout. >> >> >> >> -- >> William (http://wstein.org) >> > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/046b010d-5298-44b5-92d0-8d6039af3a02%40googlegroups.com.
