(HP-65) Percent Functions

[Paul Dale]

I've never used %D.MS. What disciplines use it and what for?

The 34S includes these other percentage functions:

Percent margin:
\[ \%MG = 100 \cdot \frac{x-y}{x} \]

Sales price (add a margin of x% to the cost y):
\[ \%+MG = \frac{y}{1-\frac{x}{100}} \]

Mean rate of return as a percentage:
\[ \%MRR = 100 \left( \sqrt[z]{\frac xy} - 1 \right) \]

Pauli