Talk:Risch algorithm: Difference between revisions

Revision as of 08:51, 8 April 2008

Revision as of 08:52, 8 April 2008

Line 63:

:: <math> f(x) = x / \sqrt{x^4 + 10 x^2 - 96 x - 71}</math>

This is simply not true. Both Mathematica and Maple can calculate the antiderivative (even not-so-recent versions). Anyone can try this at http://integrals.wolfram.com/ . (The Root[] objects represent roots of polynomials, i.e. numbers, and can be easily expanded (written in explicit form) using the ToRadicals[] command). I won't edit the article because I am not familiar with the topic (perhaps these programs don't use the Risch-algorithm for this specific problem?), but this needs to be cleaned up or rephrased ... <small>—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/129.177.44.25|129.177.44.25]] ([[User talk:129.177.44.25|talk]]) 08:51, 8 April 2008 (UTC)</small><!-- Template:UnsignedIP --> <!--Autosigned by SineBot-->