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JEE Main 2026 Preparation: Question Papers, Solutions, Mock Tests & Strategy Unacademy » JEE Study Material » Physics » Problems On Finding The Inverse Of A Matrix

Problems On Finding The Inverse Of A Matrix

The inverse of the matrix is also present in Physics. It helps solve some crucial concepts. Let us understand it better through some problems.

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The symbol A-1 denotes the inverse of a matrix. It is only when the whole matrix is A. Many formulas are there that will help you calculate the matrix inverse. But before getting the inverse of a matrix, we must know about the points, i.e., adjacent and determinants. The matrix inverse is the type that will give completely different results from the first matrix. One finds the inverse of a matrix to get about the answers for the linear equations and many more. Here we provide you with the inverse of a matrix note that will help you know about the matrices.

What does the term inverse of a matrix stand for?

The matrix inverse can be calculated with different formulas. These different formulas will help you determine the inverse of a matrix. For getting the inverse of a matrix, there is the presence of prescribed formula. And while calculating the matrix inverse, you have to use that formula in a specified manner. 

  • Firstly, we have to see the adjoint and determinant of the matrix. 
  • Once we find these both, we have to move to the next step. We have to divide the adjoint of a matrix with its determinants.
  • And lastly, we have to divide the adjoint by the determinants to get the inverse of a matrix.

NOTE: The formula for the A matrix is adj (A)/ |A|; |A| is not equal to zero. We have to find the transpose of the matrix to solve the inverse of a matrix.

The inverse of matrix problems

Here the inverse of a matrix notes will discuss the inversion of a matrix using a specific formula. We provide you with the things that will help you know when you have to do the inverse of a matrix. Many simple things will help you determine these. Such main things are given below:

  • When the determinant of a matrix is equal to zero, you can do the inverse of a matrix.
  • Pay due consideration when the matrix is not equal to zero. In such a case, the matrix is degenerative or singular.

Examples: Here, we look at the inverse of matrix problems.

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Conclusion

From here, we can see that there are many formulas to determine the matrix’s inverse. The inverse of a matrix is different from the existing matrix. The whole set of the matrix gets displaced compared to the earlier matrix. The inverse of a matrix also uses the multiplication of things which completes the whole set of matrices. To get the inverse of a matrix, we have to perform the different operations, which as a result, will make the total inverse of a matrix. Such operations are row operations or column operations for the inverse of matrix problems. To calculate the inverse, it is a must that you follow each step of the operations carefully.

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Frequently Asked Questions

Get answers to the most common queries related to the JEE Examination Preparation.

How can one find the inverse of a 2x2 matrix?

Ans. One can find the Inverse of a Matrix, whether it is a 2×2 matrix or any other set of matrices. The ...Read full

How can one calculate the inverse of a matrix?

Ans.For getting the inverse of a matrix, there is the presence of prescribed formula. And while calculating t...Read full

What are the main steps to use the formula of the inverse of a matrix?

Ans. When we talk about the steps, we have to follow some main steps t...Read full

How to know about the inverse of a matrix for a square set?

Ans. The square set of the matrix can easily be determined with the help of the formula. But to get the squa...Read full

Ans. One can find the Inverse of a Matrix, whether it is a 2×2 matrix or any other set of matrices. The elements of the 2×2 matrix are equal to the adjoint of the matrices that get formed with its division. We can find the matrix adjoint with some simple steps. The adjoint for the 2×2 matrix will occur by changing the elements diagonally and changing the signs of the second element with the opposite sign.

Ans.For getting the inverse of a matrix, there is the presence of prescribed formula. And while calculating the matrix inverse, you have to use that formula in a specified manner. The formula for the A matrix is adj (A)/ A; A is not equal to zero. The symbol A-1 denotes the inverse of a matrix. One can find any set of inverses of a matrix with a specific formula.

Ans. When we talk about the steps, we have to follow some main steps to get the inverse of a matrix. Generally, the matrix inverse is calculated by the A-1 symbol. This symbol denotes the inverse of a matrix A. Here we will discuss the matrix steps:

  • First, we have to find the minor matrix for the given numbers.
  • After getting the minor matrix, we have to get the cofactors matrix.
  • Then the adjoint of the matrix will be calculated by the transpose of the matrix.
  • And lastly, we have to divide the adjoint by the determinants to get the inverse of a matrix.

Ans. The square set of the matrix can easily be determined with the help of the formula. But to get the square matrix, we have to follow all the steps.

Firstly, we have to see the adjoint and determinant of the matrix. Then, we need to divide the adjoint of a matrix with its determinants. Finally, we get the inverse of a matrix

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