Timeline for How to express trigonometric equation in terms of of given trigonometric function?
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 13, 2017 at 12:55 | history | edited | CommunityBot | replaced http://mathematica.stackexchange.com/ with https://mathematica.stackexchange.com/ | |
| Jul 31, 2015 at 16:37 | comment | added | Acus | How to convert to multiple angles i.e. convert[Sin[x], Cos[2x]] is shown in universal method below. | |
| May 27, 2015 at 16:28 | comment | added | J. M.'s missing motivation | @Histograms, it's really neat for algebra. A mixed bag in calculus, tho; bites the careless. | |
| May 27, 2015 at 15:35 | comment | added | Histograms | +1 for using "The world's sneakiest substitution" | |
| Jun 17, 2014 at 19:10 | comment | added | stupidity | I find this really useful. Many thanks Simon! I wonder why it isn't built-in in Mathematica! | |
| May 12, 2012 at 9:55 | vote | accept | Prashant Bhate | ||
| Jan 22, 2012 at 4:53 | history | edited | Simon | CC BY-SA 3.0 | list problems with solution |
| Jan 22, 2012 at 0:00 | history | edited | Simon | CC BY-SA 3.0 | rewrote the whole thing |
| Jan 21, 2012 at 13:06 | comment | added | Simon | That said, the non-trig rules in Maple's convert family of functions do seem like a useful collection. Even if they all can (maybe) be written as families of replacement rules. | |
| Jan 21, 2012 at 12:58 | comment | added | Simon | @Nasser. Actually, I just looked at the maple link you supplied, and the functionality it gives is quite simple. I don't think it is even capable of the examples provided in the question (and my answer). convert(expr, tan) just uses the Weierstrass substitution step. convert(expr, sincos) just rewrites exp, tan, cot, etc as sin and cos. It does not simplify down to one function like the OP asked for. And so on with the other converts. | |
| Jan 21, 2012 at 12:47 | comment | added | Simon | Note that you can get some nice looking wave-packets with this code: Plot[Evaluate[# - ReleaseHold[convert[#, Tan[x]]] &[ Sin[16 x] Cos[x]]], {x, 0, 4 Pi}] | |
| Jan 21, 2012 at 12:25 | history | answered | Simon | CC BY-SA 3.0 |