Inverse of a matrix

Maths Exercises

User:

Fractions

Equivalent Fractions

Simplifying (Reducing) Fractions

Reducing to the Least Common Denominator

Comparing fractions

Adding and subtracting fractions

Multiply fractions

Divide fractions

Multiple Operations

Whole Numbers

Ordering whole numbers

Mixed operations

Equations

Linear equations

Equations with parentheses

Equations with fractions

Quadratic Equations

The discriminant

Incomplete Quadratic Equations (ax²+c=0)

Incomplete Quadratic Equations (ax²+bx=0)

Quadratic Equation

Equations in Quadratic Form

Systems of equations

Systems of two linear equations

Monomials

Polynomials

Synthetic division

Remainder theorem

Special products

Special products

Exponents and Powers

Exponents and power (Level I)

Exponents and power (Level II)

Integers

Opposite and absolute value

Multiple operations

Equations of lines

Slope of a line

Determine the slope of a line

Equation of lines

Radicals

Operations with radicals

Rationalization

Sequences and series

Arithmetic sequences

Geometric sequences

Functions

Limits (approaches a constant)

Limits (approaches infinity)

Determinants

Matrices

Inverse of a matrix

Percentages

Calculate the % of a number

Determine the %

Percentage increases

Percentage decreases

Calculate the initial capital

Inverse of a matrix

A matrix, A is said to be invertible if the determinant associated with it, |A| is non-zero.

To determinate the inverse of a matrix, A, use the formula:

$A=\left(\begin{matrix}-2&1&2\\-1&3&2\\1&-2&-2\end{matrix}\right)$

.