This preview shows pages 1–2. Sign up to view the full content.
ECE 109
Spring 2010
Name:__________________________________________
Section:______________________
Apr 58, 2010
1
Problem Session 6
This problem session is designed to give you some practice twodimensional data, similar to the video
output in Program 2.
There’s only one problem, on the next page.
You’ll get a grade of 70 just for
showing up, so try to earn the remaining 30 percent with a highquality effort.
First we need to learn/review the notion of a matrix.
(No, it’s not the movie.)
To save me a little time,
I’ll quote from Wikipedia
1
:
In mathematics, a
matrix
(plural
matrices
, or less commonly
matrixes
) is a rectangular array of numbers,
such as
An item in a matrix is called an entry or an element. The example has
entries 1, 9, 13, 20, 55, and 4. Entries are often denoted by a variable
with two subscripts, as shown on the right. Matrices of the same size
can be added and subtracted entrywise and matrices of compatible
sizes can be multiplied. These operations have many of the properties of ordinary arithmetic, except that
matrix multiplication is not commutative, that is,
AB
and
BA
are not equal in general.
In computers, matrix elements are stored in a contiguous sequence of memory locations.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview. Sign up
to
access the rest of the document.
 Spring '08
 Bradley

Click to edit the document details