Accuracy of HP Financial Calculators - Canadian mortgage

[Dieter]

(04-07-2014 02:12 AM)solwarda Wrote:  The Formula for the monthly payment is...

...missing some brackets. Otherwise the two identical powers cancel down to 1. ;-)

Quote:0.0024845167 2464872638

The true value is ...639. Or ...638916... to be precise. Using ln1+x and e^x–1 ensures the required accuracy here.

Quote:$2129.6047434136 4549091198.

The WP34s in DP mode returns 2.129,6047 4341 3645 4909 1198 5546 8796 57

Quote:As can be seen from these extended precision calculations, it all depends on how many decimal places is the calculation carried out internally inside each calculator.

You bet. ;-)

Dieter