meta user
network profile
| bio | website | |
|---|---|---|
| location | ||
| age | ||
| visits | member for | 9 months |
| seen | 24 mins ago | |
| stats | profile views | 517 |
|
Nov 10 |
revised |
FindRoot errors added 112 characters in body |
|
Nov 10 |
comment |
FindRoot errors @xzczd Thanks. I'll follow up on Rationalize[..,0]. Also, sorry about the example, I will correct it. I must've made a mistake after pasting it while I was pressing back space and delete to get the pasted stuff four spaces away from the margin. |
|
Nov 9 |
revised |
FindRoot errors showing how something suggested in one of the answer is not working for me |
|
Nov 9 |
comment |
FindRoot errors @sebhofer Rationalize is not working out for me. Even though I am getting solutions, when I substitute the solutions into expressions whose values I have a good idea about I am getting non-sense answers. I can post the example in my question. |
|
Nov 8 |
comment |
FindRoot errors ...phbbhtt.. my brains are fried. Ocfcourse.. I know what badFactor is.. literally ... I can't believe I asked the second part of the question. :) |
|
Nov 8 |
comment |
FindRoot errors @b.gatessucks whoa.. I got {-3.67838*10^-9, 208.209} when I tried {f1, f2} /. fr. Whats going on? |
|
Nov 8 |
comment |
FindRoot errors ok cool. so is the idea that f2(x)=good(x)*bad(x) then if bad(a)!=Infinity and good(a)=0 then a is a solution to f2 ? In my example, badFactor/.sol is around 10^16.. can we say that that's not (or not going to) Infinity? |
|
Nov 8 |
comment |
FindRoot errors @sebhofer... that's pretty cool. I'm trying to read Daniel's answer but since it has details of the other question, it is not immediately clear to me why Rationalize reduces any numerical instability or other issues. If you can expand a bit on why Rationalize works then that would be awesome Thanks |
|
Nov 8 |
accepted | DeleteCases messing with my mind |
|
Nov 8 |
asked | FindRoot errors |
|
Nov 5 |
comment |
DeleteCases messing with my mind @J.M. oh sweet... thank you! |
|
Nov 5 |
comment |
DeleteCases messing with my mind @rm-rf.. thank goodness I'm not the one losing it. So is there a way to get around this? |
|
Nov 5 |
asked | DeleteCases messing with my mind |
|
Nov 4 |
comment |
EdgeRenderingFunction and Graph input output structure Thanks for your answer. I'm a bit swamped this month so I'll respond properly a bit later. Thanks. |
|
Nov 4 |
accepted | Plot showing discontinuity where it shouldn't |
|
Nov 4 |
comment |
Plot showing discontinuity where it shouldn't @kguler Thank for for such an excellent explanation! I learnt about using limits in mathematica, especially inside a plot, as an additional bonus. :) It's interesting that you spotted that taking limits makes mathematica realize that the curve is continuous. cool beans! |
|
Oct 26 |
comment |
Plot showing discontinuity where it shouldn't @Artes but 1/2 (2 a x + (a - x)^2 UnitStep[-a + x]) is a continuous and even differentiable function whose derivative should be Max[x,a]. I guess MMA is not able to figure this out and I need to communicate it to MMA somehow. |
|
Oct 26 |
comment |
Plot showing discontinuity where it shouldn't @Artes ok that worked. Thanks! Do you have a sense of why I am getting an Intermediate when I differentiate? |
|
Oct 26 |
asked | Plot showing discontinuity where it shouldn't |
|
Oct 23 |
comment |
EdgeRenderingFunction and Graph input output structure @belisarius thanks. I'm happy to hear that I am complicating things. I'll try to find you in chat sometime. |
