Fooling the CASIO ClassWiz fx-991LA X

[Gerson W. Barbosa]

(05-15-2017 01:33 AM)Paul Dale Wrote:  Very nice approximation correct to fourteen digits!

Code:

3.1415926535897111461
3.1415926535897932384
               ^^^^^^

The second is π.


Pauli

Notice \(ln(100\pi)=5.749900072\) is close to 23/4 (but not close enough).

I like the following better, found with help of HP-32SII solver:

\(\ln\left(\frac{16\ln\left(878\right)}{\ln\left(16\ln\left(878\right)\right)}\r​ight)\)

"http://wes.casio.com/math/index.php?q=I-273A+U-0005000CC3F8+M-C10000AD00+S-090410100000100E1210B00051DA+R-0314159265376844010000000000000000000000+E-75C81D1A313675383738D01B1A75313675383738D0D01B1ED0"





Five digits reused once yielding 10 correct digits.

Gerson.

Edited. Trouble with LATEX here on Chrome, so I've added a picture. Also, I cannot link the CASIO WES website here, the address between quotes above.