Re: New package proposal: Math_Calculus

Hi! Johannes Schlueter wrote:

I've wrote a PHP class numeric integration and derivation. Additionaly it offers a method for searching for nulls. Documentation, at the moment, only as PHPDoc and a PHPUnit-Unit-Test-Script. Source: http://www.schlueters.de/test/Calculus.phps Unit-Test: http://www.schlueters.de/test/Calculus_test.phps Any votes please ;-)

-1, because of return (($this->f($x + $delta) - $this->f($x)) / $delta); This is the most brain-dead numeric differentiation method possible, and it will produce 'interesting' results with non-trivial functions.