Hello Everyone!
Why is this giving me negative values?
Mp = 2.4353*10^18; m =
 1.8*10^13; Rm = (1.8*10^13)/(2.4353*10^18); tfin = 10^7;
ysol = ParametricNDSolve[{y''[
       t] + (G + 6) Sqrt[(y'[t]^2 + Rm^2 y[t]^2)/6] y'[t] +
      Rm^2 y[t] == 0, y[0] == -16.8, y'[0] == 0.00033},
   y, {t, 0, tfin}, {G}];
HSol[G_] = (Sqrt[((D[y[G][t], t] /. ysol)^2 +
      Rm^2 (y[G][t] /. ysol)^2)/6]);
Table[(16 D[HSol[G], t]/HSol[G]^2) /. t -> tfin, {G, 0, 1, 0.1}]

Has anybody here played with v11 LocalObjects? I'm wondering if those could be useful for stuff like storing historical web-scraped data, such as time series of valuations of funds...

@Kuba Excuse me.Could you tell me how do you find that related post?Do you have some skills for this?

I can't even find that post I've answered ever.

@yode yes, it is tough to find duplicates unless you know what you are looking for. I knew it is there so I searched for "magnifying glass"

@yode Did you know you can include user:me in the search box and it will return only your Q's and A's?

Thanks a lot.

@MichaelE2 Well,I know that now. :)

I want to do it by function SyntaxInformation,but as my try at a few days ago,I think it is not qualified this target.As your discovery,it will give a "wrong" answer,such as SyntaxInformation/@{DirectedEdges,EquirippleFilterKernel,Plot,FindCycle}.Of course,it will give a right result in 90+% cases.

@Kuba Is it polite to change my display name after so many years? Will it cause any inconvenience?

@MMM I don't think so but you can ask someone who did that, e.g. @C.E., any advice?

@MMM I don't think there are any problems with it. Not everybody liked that I changed to my initials since several other users were already using initials, but I didn't hear from anybody that it was difficult to recognize me. Perhaps it helped that I didn't change my avatar.

Anyway, I had good reasons for changing my display name. Those were good enough that I decided that whatever inconvenience I would cause would be worth it.

Interestingly, someone referred to me here on Mathematica.SE yesterday by my old display name which I haven't used for 8 months. So maybe the adjustment isn't as easy as I thought.

@Kuba @C.E. Thank you for your valuable input.