(12C Platinum) Length of An Ellipse

[Gamo]

Calculate the Length of an ellipse according to this series formula:

   

   

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Example: FIX 5
a = 50
b = 10

50 [ENTER] 10 [R/S] display 210.08595

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Program: RPN mode: "Program run this formula in three terms"

Code:

 
001 STO 2
002 R↓
003 STO 1
004 RCL 2
005  -
006 RCL 1
007 RCL 2
008  +
009 STO 3
010  ÷
------------
011 STO 0
012 X^2
013  4
014  ÷
015  1
016  +
017 RCL 0
018  4
019 Y^X
020  6
----------
021  4
022  ÷
023  +
024 RCL 0
025  6
026 Y^X
027  2
028  5
029  6
030  ÷
---------
031  +
032  3
033  5
034  5
035 ENTER
036  1
037  1
038  3
039  ÷
040 RCL 3
041  x
042  x

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