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University of California, Davis
Department of Applied Science
Fall 2005
David M. Rocke
Numerical Methods
EAD 115
October 19, 2005
Homework Assignment 3
Due October 26, 2005
1. Do the following problems from the text: 9.8, 10.2–10.4, 10.16.
2. Write a program in a language of your choice to implement Naive Gaussian
Elimination. Below is the framework for a VBA implementation (available for
download on the web site). You may use this, or you may write the equivalent
in another language.
Option Explicit
Sub Gauss()
’
’ Declarations
’
Dim A() As Variant, b() As Variant, x() As Variant
Dim nrows As Integer, ncols As Integer, n As Integer
Dim rng1 As Range, rng2 As Range, rng3 As Range
Dim i As Integer, j As Integer, k As Integer
Dim factor As Double, sum As Double
’
’ Get input ranges, check for correct shape, and set arrays
’
Call GetRange(rng1, "Enter n by n input range for matrix of coefficients")
Call GetRange(rng2, "Enter n by 1 input range for RHS")
Call GetRange(rng3, "Enter n by 1 output range for solution")
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 Spring '10
 ROCKE

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