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Text File | 1995-02-27 | 3.0 KB | 64 lines | [TEXT/R*ch] |
-
- This file accompanies the program xFunctions 2.3 for Macintosh
- computers. This program is protected by copyright, but is
- distributed without charge. It can be freely distributed.
- This is meant to explicitely include anonymous FTP sites,
- BBS's (provided no charge is made above regular membership
- fees), and inexpensive CD-ROM shareware collections.
-
- The version distributed with this README file will work on any Macintosh.
- I have another version that requires a Macintosh with an FPU (floating
- point unit). As of February 1995, both versions of the program can
- be obtained via FPT or Gopher to math.hws.edu. I will also be happy to
- send you a copy of the FPU version, by E-mail in BinHex format or on a
- floppy disk. Comments, inquiries and bug reports are welcome.
-
- XFunctions is a general-purpose program for playing with
- mathematical functions. It is not meant for use in scientific
- analysis or for making presentation-type graphs and charts. It was
- written primarily to help students learn mathematics. A major goal
- in writing the program was to make it as easy as possible to use,
- so that students can concentrate on learning about mathematics,
- rather than learning about computers. It is also fun just to play
- with (at least if you are mathematically inclined).
-
- I wrote the program xFunctions primarily for use in Calculus and
- pre-Calculus courses. In courses that I teach, I have used it in a
- lab setting (where the students have immediate access to help), in
- combination with problem sets that encourage the students to
- explore concepts and then to write about what they have learned.
-
- Interesting features include: New functions can be input as either
- single formulas, split functions, graphs, or tables. A knife tool
- can be used to cut out a rectangle on a graph for enlargement.
- Seven special "utility" operations include: graphing several
- graphs on one set of axes; animation of a family of functions of
- the form f(x,k); graphing of derivatives and tangent lines; Riemann
- sums, with graphical display; graphs of parametrically defined
- curves; integral curves of vector fields; and three-dimensional
- plots of functions z = f(x,y); A limited printing facility is
- provided. Files can be saved containing utility examples and
- functions that you input. (A sample file of examples should
- accompany this program.) An "Info" menu is available when the
- program is run to give full information on the program and the
- seven utilities.
-
- I am no longer actively working on this program, and have no
- plans to update it extensively. Version 2.3 includes a few minor
- bug fixes and a few new features: "Zoom In" and "Zoom Back" commands
- in the Display Menu; a Display "As Table with Cluster Point" command
- in the Display Menu; and a "Clone Function" command in the Function
- Menu. (Many of the changes were suggested by John Harris of the
- University of Otago in New Zealand.)
-
-
- David Eck
- Department of Mathematics and Computer Science
- Hobart and William Smith Colleges
- Geneva, NY 14456
- E-mail: eck@hws.edu
- WWW: http://hws3.hws.edu:9000/eck/index.html
-
- February 27, 1995
-
-