Question

What is matrix and determinant? ​

Answer 1

Step-by-step explanation:

The determinant of a matrix is a special number that can be calculated from a square matrix.

A Matrix is an array of numbers:

A Matrix

A Matrix

(This one has 2 Rows and 2 Columns)

The determinant of that matrix is (calculations are explained later):

3×6 − 8×4 = 18 − 32 = −14

What is it for?

The determinant tells us things about the matrix that are useful in systems of linear equations, helps us find the inverse of a matrix, is useful in calculus and more.

Symbol

The symbol for determinant is two vertical lines either side.

Example:

|A| means the determinant of the matrix A

Answer 2

Answer:

MATRIX :  A matrix is a rectangular array of numbers or other mathematical objects for which operations such as addition and multiplication are defined.

DETERMINANT : a quantity obtained by the addition of products of the elements of a square matrix according to a given rule.

example of a 3 × 3 determinant (it has 3 rows and 3 columns)

 

A matrix is a rectangular array of numbers. ...The determinant of a square matrix is a scalar  which can be determined from that matrix's entries. This only makes sense for square matrices! If is an square matrix, then the determinant is a polynomial of degree in the entries of

HOPE IT HELPS U..........