|Trigonometrics in financial applications|
Message #1 Posted by Valentin Albillo on 29 June 2003, 9:06 p.m.
Karl Schneider posted:
"Just curious: Is there any practical application of trigonometric functions for business/finance (excluding calculation of biorythms and constellation positions for making business decisions)?
Of course. There are many practical applications of trigonometric functions for financial purposes, but they tend to be of a sufficiently high level and complexity that the average financial Joe, with his trusty 12C's 99 program steps and not-exactly-very-advanced programming features, won't be able to cut it.
Trigs are used extensively, for instance, to compute the discrete wavelet transforms in financial time series applications (stock price evolution, volatility, ...) as well as in the creation of financial simulation models, where you need to perform a lot of trigonometric decomposition operations to the large matrices that are usually needed to implement the models, among others.
To deal with such advanced financial computations using a handheld, you'd better put aside your cute little 12C and use a really capable machine, such as the vintage Sharp PC-1421 (sold in the US as EL-5510) Business/Financial Computer.
This beautiful, metallic, very slim and light machine is fully alphanumeric, has a complete qwerty keyboard, all financial and statistics functions, a fast 768 Khz 8-bit processor, 4 Kb RAM on board, expandable via RAM/ROM cards, full serial and parallel I/O for connection to a PC or peripherals such as printer and mass storage, and further it's programmable in an enhanced version of BASIC, including two-dimensional string arrays, long variable names, input/output commands, and of course, all financial functions are integrated as BASIC commands and can be included in complex BASIC programs ! All this in a beautiful, solid, very small machine.
If you want to see what it looks like, visit these links:
So much for HP chauvinism. As they say: "Never send a kid to do a man's job !"