MATRICIES

WAZZAM WAZZAM WAZZAM it's ya boy reporting live from his house, bout to smash this matrices blog up because it was just that easy of a section

A^t means transpose ----> switch rows and columns.

To add matrices they must be the same dimension (row x column)

To complete scaler multiplication you multiply every entry by the number

Example 1:

[ 3 1 5 ]

4 0 -2

a. What is the dimension?

2 x 3 matrix

b. Find M^t (transpose)

[3 4 ]

1 0

5 -2

c. Find 2m (multiply)

[ 6 2 10 ]

8 0 -4

1) To find the dimension of a matrix, you have to count how many columns it has (2) and how many rows it has (3)

2) To find M^t (transpose) you have to switch the rows & columns, which will make the example matrix a 3x2 when transposed.

3) To find 2M, you have to multiply every single number in the matrix by two.

*Calculator*

1) press second matrix

2) go over to edit

3) type in your matrix