From cf7ab73a8d4bda4516f28e24d53d9fabc4b95d09 Mon Sep 17 00:00:00 2001 From: Richard Kreckel Date: Mon, 29 Nov 1999 22:23:36 +0000 Subject: [PATCH] - corrected an error due to my ignorance WRT diff_param --- doc/tutorial/ginac.texi | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/doc/tutorial/ginac.texi b/doc/tutorial/ginac.texi index 2e307ba0..e6d2d1a1 100644 --- a/doc/tutorial/ginac.texi +++ b/doc/tutorial/ginac.texi @@ -1543,11 +1543,12 @@ static ex cos_diff_method(ex const & x, unsigned diff_param) @cindex product rule The second parameter is obligatory but uninteresting at this point. It -is used for correct handling of the product rule only. For Taylor -expansion, it is enough to know how to differentiate. But if the -function you want to implement does have a pole somewhere in the complex -plane, you need to write another method for Laurent expansion around -that point. +specifies which parameter to differentiate in a partial derivative in +case the function has more than one parameter and its main application +is for correct handling of the chain rule. For Taylor expansion, it is +enough to know how to differentiate. But if the function you want to +implement does have a pole somewhere in the complex plane, you need to +write another method for Laurent expansion around that point. Now that all the ingrediences for @code{cos} have been set up, we need to tell the system about it. This is done by a macro and we are not -- 2.44.0