Reputation
Next privilege 10,000 Rep.
Access moderator tools
Badges
2 21 86
Newest
 Necromancer
Impact
~108k people reached

Dec
29
comment NSolve didn't get the answer for my equations within 24 hours
Er…… how long did it take to solve the equation in your computer?
Dec
29
comment Somewhat Irreproducible Integrate Results
It's a backslide introduced in v10: i.stack.imgur.com/Dl8Nn.png
Dec
29
comment Symbolic integration of SphericalBesselJ
I think this should be called a backslide. In v9.0.1 both of the 2 samples give the correct result (The latter is still slower though ): i.stack.imgur.com/SYKrv.png
Dec
29
comment How to get the `“AdjustedRSquared”` from `FittedModel`
Moreover, not getting a satisfied answer here isn't a reason for not linking it back to Tieba, or you're waiting for something like this to happen?
Dec
29
comment How to get the `“AdjustedRSquared”` from `FittedModel`
I don't think so, though not being explicitly claimed, Jim's answer has clearly indicated that, fun@"AdjustedRSquared" returns ComplexInfinity simply because the "AdjustedRSquared" of fun is ComplexInfinity. Anyway, if you think the answerer has misunderstand you, you can just comment under the answer to further discuss with the answerer rather than sit in silence.
Dec
29
comment Replacement producing unexpected result
Please don't add bugs tag until the community has conformed it. BTW it's almost impossible to find a bug in core language of Mathematica.
Dec
29
comment How can I avoid using a For-loop in my code?
One can still use If to solve the problem before v10.2, by using these instead of Nothing :).
Dec
29
comment How can I avoid using a For-loop in my code?
Related: mathematica.stackexchange.com/a/2822/1871
Dec
29
comment Bug: Wrong results from NSolve on coupled polynomials. WorkingPrecision->Automatic fails
@DanielLichtblau Er… Why it's from a bug if Method->"CompanionMatrix" does better?
Dec
28
comment How to get the `“AdjustedRSquared”` from `FittedModel`
Glad to meet you too, and will be more glad if you link this post back to Tieba to avoid redundant works.
Dec
26
comment How to get the `“AdjustedRSquared”` from `FittedModel`
You may feel this answer interesting.
Dec
26
comment Can your Mathematica do the following integral?
Your friend is probably using v9. BTW v8.0.4 can't solve the integral at all.
Dec
25
comment Bug: Wrong results from NSolve on coupled polynomials. WorkingPrecision->Automatic fails
@JerryGuern I'd like to mention that Automatic isn't $MachinePrecision but MachinePrecision. Though MachinePrecision == $MachinePrecision returns True, when they're used as the option value of WorkingPrecision, they're totally different, MachinePrecision will lead to… Er… machine precision calculation, while $MachinePrecision will lead to arbitrary precision calculation. (Not sure if I've used proper terminology.) This issue has been mentioned sporadically in many posts, an example is this
Dec
21
comment Series expansion not possible for more than two variables?
I believe you'll find this post interesting.
Dec
21
comment How to align/grid several plots(mXn) in one figure?
@E.Doroskevic "I would recommend to check assigned option values using AbsoluteOption" Are you serious?
Dec
20
comment How to compile this code?
@JanePotter ……我的意思是你可以把这个帖子的链接也在贴吧那边贴一下,以免有人重复劳动。
Dec
20
comment How to compile this code?
@JanePotter You can link this post back to Tieba.
Dec
20
comment Parallelize Factor or Simplfy
I tried to improve the English expression of your post, hope I didn't misunderstand your meaning, if so, feel free to roll back.
Dec
20
comment Parallelize Factor or Simplfy
Have you tried Parallelize[{Factor[…], Factor[…], Factor[…]}]?
Dec
20
comment How to compile this code?
@JanePotter Then simply use reimg = u\[Transpose].Unm.u;