From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Nick Dokos Newsgroups: gmane.emacs.help Subject: Re: Using Calc Date: Wed, 05 May 2021 17:37:53 -0400 Message-ID: <87y2csrhe6.fsf@alphaville.usersys.redhat.com> References: <877dkdd8d2.fsf@zoho.eu> <878s4twhmh.fsf@ucl.ac.uk> <874kfhwgt0.fsf@ucl.ac.uk> <87lf8tv1c4.fsf@ucl.ac.uk> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="20330"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:FgzLaDnrKcBKbW1Q1E0UFCc34Ks= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed May 05 23:41:38 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lePH0-0005Cb-7a for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 05 May 2021 23:41:38 +0200 Original-Received: from localhost ([::1]:44550 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lePGz-0002Yb-4o for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 05 May 2021 17:41:37 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:45854) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lePDX-0000lm-0n for help-gnu-emacs@gnu.org; Wed, 05 May 2021 17:38:03 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:47206) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lePDV-0002p9-Im for help-gnu-emacs@gnu.org; Wed, 05 May 2021 17:38:02 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1lePDS-000Acs-SH for help-gnu-emacs@gnu.org; Wed, 05 May 2021 23:37:58 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: 5 X-Spam_score: 0.5 X-Spam_bar: / X-Spam_report: (0.5 / 5.0 requ) BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FORGED_GMAIL_RCVD=1, FREEMAIL_FORGED_FROMDOMAIN=0.248, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, NML_ADSP_CUSTOM_MED=0.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:129511 Archived-At: Christopher Dimech writes: > I have made some more progress with calc. > > A pending thing is how to use taylor because > > taylor(ln(x), x, 3) => > > did not do anything. I might be missing something or the example is not a good one. > There is no Taylor expansion of the logarithm around x=0: it diverges there. Try taylor(ln(x), x-1, 3) => to get the usual expansion around x=1. -- Nick "There are only two hard problems in computer science: cache invalidation, naming things, and off-by-one errors." -Martin Fowler