Matrices

Question 1

Addition and Subtraction of Matrices

Answer 1

Add or subtract corresponding elements

Question 2

Scalar Multiplication

Answer 2

Use the scalar(a number) to multiply each element in the matrix.

Question 3

Equivalent Matrices

Answer 3

Corresponding elements are equal

Question 4

Matrix Multiplication

Answer 4

Rows of the first matrix by column of second matrix

Question 5

Determinant of 2*2 matrix

Answer 5

ad-bc

Question 6

Singular matrix

Answer 6

Determinant equals 0

Have no inverse

Question 7

Amount of a 2*2 matrix

Answer 7

a b adjoins = d -b

c d -c a

Question 8

Inverse of a 2*2 matrix

Answer 8

1/determinant(adjoint)

Question 9

Solving simultaneous equations using matrices

Answer 9

B=A^-1C