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Last updated on September 17, 2025
Calculators are reliable tools for solving simple mathematical problems and advanced calculations like matrix operations. Whether you’re working on linear algebra, engineering problems, or mathematical research, calculators will make your life easy. In this topic, we are going to talk about adjoint matrix calculators.
An adjoint matrix calculator is a tool used to find the adjoint of a given matrix. The adjoint of a matrix is the transpose of its cofactor matrix.
This calculator makes the computation of the adjoint much easier and faster, saving time and effort.
Given below is a step-by-step process on how to use the calculator:
Step 1: Enter the matrix: Input the elements of the matrix into the given fields.
Step 2: Click on calculate: Click on the calculate button to compute the adjoint and get the result.
Step 3: View the result: The calculator will display the adjoint matrix instantly.
To find the adjoint of a matrix, the calculator uses the following steps.
First, compute the cofactor of each element. Then, form the cofactor matrix.
Finally, transpose the cofactor matrix to obtain the adjoint.
For a 2x2 matrix, the adjoint is simple:
If the matrix is begin{bmatrix} a & b \\ c & d \end{bmatrix}, its adjoint is begin{bmatrix} d & -b \\ -c & a \end{bmatrix}.
When we use an adjoint matrix calculator, there are a few tips and tricks that we can use to make it a bit easier and avoid mistakes:
Understand the concept of cofactors and transposition, as this will make the process easier.
Ensure the input matrix is square since the adjoint is defined for square matrices only.
Check your results by multiplying the original matrix with its adjoint to see if the determinant appears as a scalar multiple of the identity matrix.
While calculators help reduce errors, mistakes can still occur when using a calculator.
Find the adjoint of the matrix \(\begin{bmatrix} 2 & 3 \\ 1 & 4 \end{bmatrix}\).
Calculate the cofactor matrix: begin{bmatrix} 4 & -3 \\ -1 & 2 \end{bmatrix}
Transpose the cofactor matrix to get the adjoint: begin{bmatrix} 4 & -1 \\ -3 & 2 \end{bmatrix}
The cofactor matrix is formed by taking the determinant of 2x2 minors and adjusting the signs accordingly. Transposing gives the adjoint.
Determine the adjoint of the matrix \(\begin{bmatrix} 5 & 7 \\ 2 & 6 \end{bmatrix}\).
Calculate the cofactor matrix: begin{bmatrix} 6 & -7 \\ -2 & 5 \end{bmatrix}
Transpose the cofactor matrix to get the adjoint: begin{bmatrix} 6 & -2 \\ -7 & 5 \end{bmatrix}
After calculating the cofactor matrix, the transpose operation yields the adjoint matrix.
Compute the adjoint of the matrix \(\begin{bmatrix} 1 & 2 \\ 3 & 5 \end{bmatrix}\).
Calculate the cofactor matrix: begin{bmatrix} 5 & -2 \\ -3 & 1 \end{bmatrix}
Transpose the cofactor matrix to get the adjoint: begin{bmatrix} 5 & -3 \\ -2 & 1 \end{bmatrix}
The cofactor matrix is created using determinants of 2x2 minors and sign changes, followed by transposition to obtain the adjoint.
What is the adjoint of the matrix \(\begin{bmatrix} 2 & 1 \\ 4 & 3 \end{bmatrix}\)?
Calculate the cofactor matrix: begin{bmatrix} 3 & -1 \\ -4 & 2 \end{bmatrix}
Transpose the cofactor matrix to get the adjoint: begin{bmatrix} 3 & -4 \\ -1 & 2 \end{bmatrix}
The adjoint is derived by transposing the cofactor matrix formed from the original matrix.
Find the adjoint of the matrix \(\begin{bmatrix} 0 & 1 \\ 2 & 3 \end{bmatrix}\).
Calculate the cofactor matrix: begin{bmatrix} 3 & -1 \\ -2 & 0 \end{bmatrix}
Transpose the cofactor matrix to get the adjoint: begin{bmatrix} 3 & -2 \\ -1 & 0 \end{bmatrix}
By calculating the cofactors and transposing, the adjoint matrix is obtained.
Seyed Ali Fathima S a math expert with nearly 5 years of experience as a math teacher. From an engineer to a math teacher, shows her passion for math and teaching. She is a calculator queen, who loves tables and she turns tables to puzzles and songs.
: She has songs for each table which helps her to remember the tables