What Matrix
A malik is a set of elements, ougnized into rous and columns
Rows
columns
and d are the diarpniel elements
band & are the off diegonal elements.
* Matrices are like the plain numbers in many ways, they can be added. Subtracted, and in some cores, multiplied and inverted (divided)
Examples:
1) Dimension of a matrix :
Numbers of rows by numbers of columns.
The matrix A is a 2x2 matrix, bis 1x3 matrix
* A matrix with only one column or only one row is called vector
2) Usual Notation
If A matrix har columns, it is called a above, is A an equal numbers of rows ond square matrix. Matrix A, square matrix.
Upper case retter Lower case → matricer vectors →