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- Installing the Matrix Solver
-
- The Matrix Solver is an extension to QuickFigure (a QuickFigure Tool).
- To install the Matrix Solver, simply download it to your Newton. It
- will not appear in the Extras Drawer, but it may be removed using the
- Remove Software button in either the Card dialog (if it is installed on
- a memory card) or “Prefs”/”Memory” if it is installed in internal
- memory. It will be listed as “solver:donv”.
-
- The Matrix Solver requires approximately 7k of memory.
-
- To use the Matrix Solver, open QuickFigure, and select the cells
- containing the matrix you wish to solve (see “Using the Matrix Solver”
- below), tap on the “Tools” button, and select “Matrix Solver” from the
- list of Tools.
-
- The following is an excerpt from the QuickFigure Pro 2.1 User’s Guide
- (my apologies for the very lame ASCII illustrations):
-
- Using The Matrix Solver
-
- The Matrix Solver is a QuickFigure Tool which allows you to solve
- linear equations, I.e. equations where you have x equations and x
- unknowns. For example, you might have the following 3 equations and 3
- unknowns:
-
- 45a+34b+23c=456
- 34a+98b+76c=78
- 2a+5b+7c=12
-
- You could then solve for the three unknowns (a,b, and c).
-
- To solve this using the matrix solver, you would enter each coefficient
- into a cell, leaving blank cells in between the last coefficient. For
- example:
-
- A | B | C | D | E
- -----------------------
- 1 45 | 34 | 23 | | 456
- -----------------------
- 2 34 | 98 | 76 | | 78
- -----------------------
- 3 2 | 5 | 7 | | 12
- -----------------------
-
- Now, select the area (the range A1:E3 in this example), tap on the Tools button, select
- “Matrix Solver” from the pop-up menu which appears, and the solutions
- will appear in column D. For example:
-
- A | B | C | D | E
- ---------------------------
- 1 45 | 34 | 23 |13.066 | 456
- ---------------------------
- 2 34 | 98 | 76 |-4.868 | 78
- ---------------------------
- 3 2 | 5 | 7 |1.4584 | 12
- ---------------------------
-
-
- In this example, the solutions for each variable are:
-
- a: 13.066
- b: -4.868
- c: 1.4584
-
- Note: The Matrix Solver is a QuickFigure Tool, so it does not have an
- icon in the Extras Drawer. If you wish to remove it from your Newton,
- it will appear when you tap the “Remove Software” button in your Card
- or Prefs/Memory dialog. Its symbol is “solver:donv.”
-
-
- About the Matrix Solver
- =================
-
- The Matrix Solver was written for PelicanWare by Ashish Mishra.
-
- Copyright 1994, PelicanWare, Inc.
-