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Topic: [ap-calculus] TI-89 question
Replies: 1   Last Post: Sep 27, 2012 6:17 PM

 Mathew Deram Posts: 34 Registered: 1/4/12
RE: [ap-calculus] TI-89 question
Posted: Sep 27, 2012 6:17 PM

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Jewel,

Make sure that there isn't a number stored as x. You can do 2nd + F1 to get to the "Clear a-z" option (this resets all of the variables).
Let me know if that doesn't fix it!

Sincerely,
Mat

From: Jewel Filipovich [mailto:jfilipov@lamar.k12.ga.us]
Sent: Thursday, September 27, 2012 8:12 AM
To: AP Calculus
Subject: [ap-calculus] TI-89 question

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.
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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??

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