How to find the inverse of a 2 by 2 matrix; using its ad joint and determinant: The simplified way.
You will learn how to find the inverse of a matrix.
An explanation on why and how we use the ad joint and determinant of a matrix to find the inverse will also be provided.
The adjoint of a matrix is obtained by considering the diagonal entries, which change their signs and position as explained in the video.
The inverse of a matrix is then obtained from the formula, Inverse is equal to 1/determinant, then multiplied by the adjoint of the given matrix, As explained in the video.
The concept of matrix multiplication and matrix addition are also emphasized. An exercise for trial is also provided to help you do some practice.
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