Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Courses » ap-calculus

Topic: [ap-calculus] TI-89 question
Replies: 1   Last Post: Sep 27, 2012 7:06 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View  
Greg Kelly

Posts: 224
Registered: 12/6/04
RE: [ap-calculus] TI-89 question
Posted: Sep 27, 2012 7:06 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

NOTE:
This ap-calculus EDG will be closing in the next few weeks. Please sign up for the new AP Calculus
Teacher Community Forum at https://apcommunity.collegeboard.org/getting-started
and post messages there.
------------------------------------------------------------------------------------------------

My guess is that you have x defined as zero. Try clearing the variables by using 2nd, F6, 1.

Greg








Date: Thu, 27 Sep 2012 09:11:34 -0400
Subject: [ap-calculus] TI-89 question
From: jfilipov@lamar.k12.ga.us
To: ap-calculus@lyris.collegeboard.com



NOTE:
This ap-calculus EDG will be closing in the next few weeks. Please sign up for the new AP Calculus
Teacher Community Forum at https://apcommunity.collegeboard.org/getting-started
and post messages there.
----------------------------------------------------------------------------------------------------------------------------I have used a TI-89 for a long while and never come across this problem. One of my student's calculator: when you ask it to determine a derivative entered as d(2x^2 +3x,x), I get an answer of just 3, rather than 4x + 3. It does not matter if you put multiplication signs in between either. Any thoughts??
--

Jewel Filipovich, M.A.T., Gifted Certified

Department of Mathematics, Dept. Chair

Lamar County Comprehensive High School
#1 Trojan Way
Barnesville, GA 30204
770-358-8641



A goal without a plan is merely a wish.
Our plan is "every child, every chance, every day".
Our goal is a world-class education for every child.
Our vision is a school system of educational excellence that embraces
accountability, progress, and our diverse culture.

This message is intended only for specified recipients. If you are not the intended recipient you are notified that disclosing, copying, distributing, or taking any action in reliance on the contents of this information is strictly prohibited. This communication represents the originator's personal views, which may not reflect those of Lamar County Schools. The sender believes that this E-Mail and any attachments do not contain a virus, worm, Trojan horse, and/or malicious code when sent. This message and its attachments could have been infected during transmission. By reading the message and opening any attachments, the recipient accepts full responsibility for taking protective and remedial action about viruses and other defects.

If you received this email in error, please immediately notify Technology Services, Lamar County Schools, 100 Burnette Rd., Barnesville, Georgia 30204, Telephone Number: 770-358-8668, E-mail address: techsupport@lamar.k12.ga.us
To search the list archives for previous posts go to
http://lyris.collegeboard.com/read/?forum=ap-calculus
---
To search the list archives for previous posts go to
http://lyris.collegeboard.com/read/?forum=ap-calculus



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.