Article View: bit.listserv.graph-ti
Article #251Graph-TI - Graph Intersection points
From: JONESL
Date: Fri, 28 Oct 1994 01:19
Date: Fri, 28 Oct 1994 01:19
14 lines
1614 bytes
1614 bytes
I am using a Calculus Text titled Elements of Calculus and Analytic Geometry by Thomas and Finney, published by Addison-Wesley, c 1989. On page 100, problem 34, the problem states " A line is drawn tangent to the curve y=x^3-x at the point (-1,0). Where else does the line intersect the curve?" I decided to use my TI-82 calculator to assist in solving this problem. I entered y1 = x^3-x and after taking the derivative by hand and subbing in x=-1 to get a slope of 2 for the tangent line, I entered y2 = 2x+2. I graphed both y1 and y2 using zoom 6. Then 2nd Calc 5 to determine intersection points. I find the point (2,6) as an intersection point, but try as I may, I cannot get (-1,0), the original tangent line point, as an intersection point using 2nd Calc 5. What am I doing wrong? Thanks, Larry Jones jonesl@calvin.duq.edu
Technical Details
Message-ID:
<783307151.930000.JONESL@calvin.cc.duq.edu>Path:
arc1-ca.pugleaf.net!nntp.gmd.de!Germany.EU.net!EU.net!howland.reston.ans.net!swrinde!news.dell.com!paladin.american.edu!auvm!calvin.cc.duq.edu!JONESLShow Full Headers
Complete Article Headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 104512,dd91dedc634984db,start X-Google-Attributes: gid104512,public X-Google-ArrivalTime: 1994-10-27 18:19:11 PST Path: arc1-ca.pugleaf.net!nntp.gmd.de!Germany.EU.net!EU.net!howland.reston.ans.net!swrinde!news.dell.com!paladin.american.edu!auvm!calvin.cc.duq.edu!JONESL Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU Newsgroups: bit.listserv.graph-ti Date: Thu, 27 Oct 1994 21:19:11 -0400 (EDT) From: JONESL@calvin.cc.duq.edu Subject: Graph-TI - Graph Intersection points Message-ID: <783307151.930000.JONESL@calvin.cc.duq.edu> Mail-System-Version: <MultiNet-MM(362)+TOPSLIB(158)@calvin.cc.duq.edu> Sender: owner-graph-ti@dsmail.internic.net Precedence: bulk Reply-To: JONESL@calvin.cc.duq.edu Lines: 13