A case against the x<>y key
05-18-2015, 10:06 PM
Post: #50
 Thomas Klemm Senior Member Posts: 2,001 Joined: Dec 2013
RE: A case against the x<>y key
You could use the calculation of cos(x) as a practical example:

\begin{align*} \cos(x) &= 1-\frac{x^2}{2!}+\frac{x^4}{4!}-\frac{x^6}{6!}+\frac{x^8}{8!}-\frac{x^{10}}{10!}+O(x^{12})\\ &= 1-\frac{x^2}{1\cdot2}(1-\frac{x^2}{3\cdot4}(1-\frac{x^2}{5\cdot6}(1-\frac{x^2}{7\cdot8}(1-\frac{x^2}{9\cdot10}))))+O(x^{12}) \end{align*}

Using the x<>y key:

x2 ENTER ENTER ENTER
90 ÷ 1 x<>y −
× 56 ÷ 1 x<>y −
× 30 ÷ 1 x<>y −
× 12 ÷ 1 x<>y −
× 2 ÷ 1 x<>y −

Using the CHS key:

x2 CHS ENTER ENTER ENTER
90 ÷ 1 +
× 56 ÷ 1 +
× 30 ÷ 1 +
× 12 ÷ 1 +
× 2 ÷ 1 +

Kind regards
Thomas
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 Messages In This Thread A case against the x<>y key - hansklav - 05-09-2015, 10:49 PM RE: A case against the x<>y key - Les Bell - 05-10-2015, 12:56 AM RE: A case against the x<>y key - hansklav - 05-10-2015, 10:25 AM RE: A case against the x<>y key - Thomas Radtke - 05-10-2015, 12:35 PM RE: A case against the x<>y key - Paul Dale - 05-10-2015, 01:13 AM RE: A case against the x<>y key - hansklav - 05-10-2015, 10:37 AM RE: A case against the x<>y key - Mark Hardman - 05-10-2015, 02:20 AM RE: A case against the x<>y key - hansklav - 05-10-2015, 10:43 AM RE: A case against the x<>y key - Thomas Radtke - 05-10-2015, 12:49 PM RE: A case against the x<>y key - hansklav - 05-10-2015, 02:32 PM RE: A case against the x<>y key - Thomas Radtke - 05-10-2015, 03:02 PM RE: A case against the x<>y key - Mark Hardman - 05-10-2015, 03:12 PM RE: A case against the x<>y key - hansklav - 05-10-2015, 03:51 PM RE: A case against the x<>y key - Mark Hardman - 05-10-2015, 08:51 PM RE: A case against the x<>y key - hansklav - 05-11-2015, 12:09 AM RE: A case against the x<>y key - Les Bell - 05-11-2015, 12:24 AM RE: A case against the x<>y key - Massimo Gnerucci - 05-10-2015, 04:10 PM RE: A case against the x<>y key - Paul Dale - 05-10-2015, 09:55 PM RE: A case against the x<>y key - J-F Garnier - 05-10-2015, 03:48 PM RE: A case against the x<>y key - Mark Hardman - 05-10-2015, 02:32 PM RE: A case against the x<>y key - Les Bell - 05-11-2015, 12:20 AM RE: A case against the x<>y key - Tugdual - 05-10-2015, 04:06 AM RE: A case against the x<>y key - d b - 05-10-2015, 05:16 AM RE: A case against the x<>y key - hansklav - 05-10-2015, 10:59 AM RE: A case against the x<>y key - Thomas Klemm - 05-10-2015, 06:49 PM RE: A case against the x<>y key - Mark Hardman - 05-10-2015, 08:14 PM RE: A case against the x<>y key - Steve Simpkin - 05-10-2015, 09:32 PM RE: A case against the x<>y key - Mark Hardman - 05-10-2015, 09:44 PM RE: A case against the x<>y key - Steve Simpkin - 05-10-2015, 11:01 PM RE: A case against the x<>y key - hansklav - 05-10-2015, 09:37 PM RE: A case against the x<>y key - Thomas Klemm - 05-11-2015, 03:23 AM RE: A case against the x<>y key - Les Bell - 05-11-2015, 03:39 AM RE: A case against the x<>y key - hansklav - 05-11-2015, 09:41 PM RE: A case against the x<>y key - Thomas Klemm - 05-11-2015, 03:49 AM RE: A case against the x<>y key - Les Bell - 05-11-2015, 04:18 AM RE: A case against the x<>y key - Thomas Klemm - 05-11-2015, 05:07 AM RE: A case against the x<>y key - Les Bell - 05-11-2015, 06:10 AM RE: A case against the x<>y key - RMollov - 05-11-2015, 09:49 AM RE: A case against the x<>y key - Dave Britten - 05-11-2015, 12:30 PM RE: A case against the x<>y key - Don Shepherd - 05-11-2015, 02:16 PM RE: A case against the x<>y key - Massimo Gnerucci - 05-11-2015, 03:59 PM RE: A case against the x<>y key - Les Bell - 05-11-2015, 10:27 PM RE: A case against the x<>y key - hansklav - 05-17-2015, 10:49 PM RE: A case against the x<>y key - Thomas Klemm - 05-11-2015, 10:10 PM RE: A case against the x<>y key - d b - 05-12-2015, 12:35 AM RE: A case against the x<>y key - Dave Britten - 05-12-2015, 01:07 AM RE: A case against the x<>y key - Les Bell - 05-12-2015, 01:41 AM RE: A case against the x<>y key - Dwight Sturrock - 05-12-2015, 11:39 PM RE: A case against the x<>y key - Thomas Klemm - 05-18-2015, 08:35 PM RE: A case against the x<>y key - Thomas Klemm - 05-18-2015 10:06 PM

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