New Blog Entry: Fun with the HP 12C

10242014, 03:41 AM
Post: #1




New Blog Entry: Fun with the HP 12C  
10242014, 05:03 PM
Post: #2




RE: New Blog Entry: Fun with the HP 12C
Great entry Eddie! Love to see the 12c working in all sorts of areas.
Consider sharing on your blog some of the game programs for the 12c found here too. 12c document 

10252014, 04:05 PM
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RE: New Blog Entry: Fun with the HP 12C
More fun with the HP12C: HP12C’s Serendipitous Solver


10252014, 04:15 PM
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RE: New Blog Entry: Fun with the HP 12C
Valentin doesn't even need to sign his work. Tanquam ex ungue leonem.


10282014, 02:06 AM
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RE: New Blog Entry: Fun with the HP 12C  
10282014, 02:42 AM
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RE: New Blog Entry: Fun with the HP 12C  
10282014, 03:41 AM
Post: #7




RE: New Blog Entry: Fun with the HP 12C
Thank you so much guys! My next blog entry is a compilation featuring the three links suggested and two more: HP 12C Games and BlackScholes.
Link: http://edspi31415.blogspot.com/2014/10/h...olver.html 

10282014, 04:45 AM
(This post was last modified: 10282014 06:13 AM by Thomas Klemm.)
Post: #8




RE: New Blog Entry: Fun with the HP 12C
Combining both of Valentin's ideas we can define the Taylor series of sin:
0 CF_{0} 1 CF_{j} x<>y CF_{j} x<>y 2 CHS ÷ 3 ÷ CF_{j} x<>y CF_{j} x<>y 4 CHS ÷ 5 ÷ CF_{j} x<>y CF_{j} x<>y 6 CHS ÷ 7 ÷ CF_{j} (...) x<>y CF_{j} x<>y 12 CHS ÷ 13 ÷ CF_{j} Then we can use this short program to calculate sin(x): Code: 1/x Cheers Thomas 

10282014, 10:31 PM
Post: #9




RE: New Blog Entry: Fun with the HP 12C  
10292014, 12:42 AM
(This post was last modified: 10292014 07:57 AM by Thomas Klemm.)
Post: #10




RE: New Blog Entry: Fun with the HP 12C
This is another way to enter the coefficients:
0 CF_{0} 1 CF_{j} 0 CF_{j} 3 n! 1/x CHS CF_{j} 0 CF_{j} 5 n! 1/x CF_{j} 0 CF_{j} 7 n! 1/x CHS CF_{j} 0 CF_{j} 9 n! 1/x CF_{j} 0 CF_{j} 11 n! 1/x CHS CF_{j} 0 CF_{j} 13 n! 1/x CF_{j} You can use RCL CF_{j} to check your entries. The index n will go down from 13 to 0. Just make sure to set n to 13 again! This is the program as numeric codes: Code: 01 22 These are some examples: 0.1 R/S 0.09983341665 0.2 R/S 0.1986693308 1 R/S 0.8414709848 3.141592654 ENTER 6 ÷ 0.5235987757 R/S 0.5000000000 HTH Thomas PS: All angles are in radians. Edit: Added a Nonpareil state file. 

10312014, 09:31 PM
Post: #11




RE: New Blog Entry: Fun with the HP 12C
With this program the function sin^{1} can be calculated. Just use the same entries for the coefficients as before for sin.
Code: 01 16 CHS Examples: 0.1 R/S 0.1001674212 0.2 R/S 0.2013579208 0.5 R/S 0.5235987756 6 × 3.141592654 0.5 √x 0.7071067812 R/S 0.7853981632 4 × 3.141592653 Cheers Thomas 

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