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 RPrefsS/SMemoryS if it is installed in internal

memory. It will be listed as Rsolver:donvS.



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 RUsing the Matrix SolverS

below), tap on the RToolsS button, and select RMatrix SolverS from the

list of Tools.



The following is an excerpt from the QuickFigure Pro 2.1 UserUs 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

RMatrix SolverS 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 RRemove SoftwareS button in your Card

or Prefs/Memory dialog. Its symbol is Rsolver:donv.S





About the Matrix Solver

=================



The Matrix Solver was written for PelicanWare by Ashish Mishra. 



Copyright 1994, PelicanWare, Inc.