ITM 107 Lecture Notes - Lecture 3: Commutative Property, Natural Number, Plasma Display

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 107
• Professor: Aziz Guergachi

Document Summary

Matrices: matrices are classified in terms of the numbers of rows and columns they have. M has three rows and four columns, so we say this is a 3 4 (cid:894)read (cid:862)three b(cid:455) four(cid:863)(cid:895) matrix: the matrix has m rows and n columns, so it is an m n matrix. If two or more matrices have the same order, we can add them by adding their corresponding entries: note that the sum of a and b could be found by adding the matrices in either order. If: using the negative, we can define the difference a b (when a and b have the same then order) by a b = a + ( b), or by subtracting corresponding elements. Scalar multiplication: we can define scalar multiplication as follows, scalar multiplication. In general, we can multiply an m n matrix by an n p matrix, the product will be an m.