Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!us.feeder.erje.net!newsfeed.fsmpi.rwth-aachen.de!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail From: Joe Riel Newsgroups: comp.soft-sys.math.maple Subject: Re: missing asymptote Date: Sun, 23 Nov 2014 22:24:59 -0800 Organization: A noiseless patient Spider Lines: 16 Message-ID: <87h9xpktdw.fsf@san.rr.com> References: <78f827e7-f3d7-4c1e-beaf-b95e410c4dc2@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Info: mx02.eternal-september.org; posting-host="15591ad2607da309a0d1a78a1d632bc7"; logging-data="17784"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18FHhe139Fv9MOJ3Sd7Qrrf" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.4 (gnu/linux) Cancel-Lock: sha1:zxGzaxyDsn7KT6tyFh6tOlH3Ckg= sha1:/quYPhfzDoZu7v74z29RPZ9tOSo= Xref: csiph.com comp.soft-sys.math.maple:1040 carlo berlingen writes: > In plot(1/(x-1), x=-2..2) I get the asymptote x=1, > but in plot(1/(x-1)^2, x=-2..2) Maple doesnt display the asymptote. > Why??????? > best regards > carlo That the first plots the asymptote is an illusion caused by the plotting routine generating a single Matrix of points representing a continuous plot, when, in fact, the curve is not continuous. Because the second curve is even around 1, connecting the points adjacent to the singularity does not form a "pseudo-asymptote". -- Joe Riel