Drexel dragonThe Math ForumDonate to the Math Forum


Math Forum
 Ask Dr. Math
 Discussions
 Internet Newsletter
 MathTools
 Problems of the Week
 Teacher2Teacher
 Teacher Exchange
 Workshops

Search All of the Math Forum:
Browse our Internet Mathematics Library

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


Math Forum » Discussions » Software » Fathom and TinkerPlots

Topic: Evaluation Error message
Replies: 2   Last Post: Jun 7, 2008 2:05 AM

Advanced Search
Reply to this Topic Reply to this Topic

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ] Topics: [ Previous | Next ]
JCHAPPELLE@BROOKSTONEschool.org

Posts: 17
Registered: 12/6/04
Evaluation Error message
Posted: Jun 6, 2008 2:43 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

I am attempting to write a demonstration of power transformations to achieve linearity. I have created a data set with x defined as random integers from -5 to 5. The equation for y is (a(x-c)^p+d)^t with all variables controlled by sliders. Whenever x is a negative number I get an evaluation error for y. Understand that when p is a fraction with an even denominator and x-c is negative there is no solution but when I set p and t to integer values the left side of the parabola does not appear. I'm sure I'm doing something stupid but I just cannot see it. Can anyone help.

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

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2013. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.