# Matrix of Minors Calculator

## Find the matrix of minors step by step

The calculator will find the matrix of minors of the given square matrix, with steps shown.

Related calculator: Cofactor Matrix Calculator

If the calculator did not compute something or you have identified an error, or you have a suggestion/feedback, please write it in the comments below.

The Matrix of Minors Calculator is a tool designed to simplify and expedite the process of calculating the matrix of minors. This user-friendly interface offers an intuitive approach to linear algebra computations, taking away the complexity often associated with them.

## How to use the Matrix of Minors Calculator?

• ### Input the Square Matrix

Begin by entering the elements of your given square matrix in the input fields. Make sure that the number of rows and columns are the same, as a matrix of minors can be calculated only for square matrices.

• ### Initiate Calculation

Once your matrix is correctly inputted, simply click the "Calculate" button. There's no need for additional input or settings adjustment. The calculator is designed to automatically process your given matrix.

• ### View the Result

After you click "Calculate", the tool quickly computes and displays the matrix of minors. Each element in the given matrix will be replaced by its corresponding minor, forming a new matrix which is your matrix of minors.

## What is a Matrix of Minors?

The concept of a Matrix of Minors is pivotal in linear algebra. To explain this, let's consider a given square matrix $A$:

$$\left[\begin{array}{ccc}a&b&c\\d&e&f\\g&h&i\end{array}\right]$$

The matrix of minors is a new matrix where each element is replaced by its minor. The minor of an element in $A$ is calculated as the determinant of the sub-matrix formed by eliminating the row and column where that element is located.

For example, let's calculate the minor of element $a$ (located at 1st row, 1st column) in the matrix $A$. We eliminate the 1st row and 1st column, resulting in the sub-matrix:

$$\left[\begin{array}{cc}e&f\\h&i\end{array}\right]$$

The determinant of this 2x2 sub-matrix is $ei-fh$, which becomes the minor of $a$ in the matrix of minors.

This procedure should be done for every element in the matrix $A$. For example, the minor of $b$ (located at 1st row, 2nd column) would be the determinant of the sub-matrix formed by eliminating the 1st row and 2nd column:$$\left[\begin{array}{cc}d&f\\g&i\end{array}\right]$$

The determinant of this sub-matrix is $di-fg$, which becomes the minor of $b$. By performing this operation for all elements, we obtain the matrix of minors.

This principle of a matrix of minors is a stepping stone in several vital matrix computations such as finding the cofactor matrix, and eventually, the inverse of a matrix. It's a crucial concept to master for anyone dealing with linear algebra.

## What is the difference between a minor and a cofactor?

Minors and cofactors are both used in matrix operations. Minors are calculated by taking the determinant of the sub-matrix when a row and column are removed. Cofactors are the minors multiplied by $-1$ raised to the sum of the element's row and column numbers.

## Why Choose our Matrix of Minors Calculator?

• ### Ease of Use

Our calculator features a user-friendly interface that makes it accessible to both students and professionals. You can quickly input your square matrix and obtain the matrix of minors with just a few clicks.

• ### Time-Saving

By automating the calculation process, our calculator saves you valuable time and effort. You no longer need to manually calculate each minor, making complex matrix operations more efficient.

• ### Accuracy and Precision

Our calculator ensures accurate results by performing calculations based on established mathematical formulas and algorithms. It eliminates the possibility of human error associated with manual calculations.

• ### Versatility

Our calculator can handle matrices of different sizes.

• ### Complementary Resources

Alongside this calculator, our website offers additional calculators related to linear algebra and matrix operations. These calculators can further enhance your understanding and proficiency.

### FAQ

#### Where can I find more information on the concept of matrix of minors?

Our calculator gives comprehensive information, but you can search further on the Internet.

#### Is the Matrix of Minors Calculator accurate?

Yes, the calculator uses precise mathematical formulas and algorithms to ensure accurate calculations. It eliminates the possibility of human error commonly associated with manual computations.

#### Can I use the Matrix of Minors Calculator for non-square matrices?

No, the Matrix of Minors can't be found for non-square matrices. Thus, the calculator requires the matrix to have the same number of rows and columns.

#### What is a matrix of minors?

A matrix of minors is obtained by replacing each element of a given square matrix with its corresponding minor. The minor of an element is the determinant of the sub-matrix formed by deleting one row and one column from the original matrix where that element resides.