# How to Calculate Determinant of 3x3 Matrix

To calculate of determinant is very important for calculating the inverse of matrix and rank of matrix. We can easily calculate the determinant of 3X3 matrix. For calculating determinant of 3X3 matrix, we have to understand the difference between co-factor and minor. We can calculate the value of determinant of 3X3 matrix by sum of the product of first row's element with co-factor and minor.

For example, if we use first row's element. At that time, we use co-factor + - + and elements of first row and its minors.

Following video tutorial will explain it deeply.

For example, if we use first row's element. At that time, we use co-factor + - + and elements of first row and its minors.

Following video tutorial will explain it deeply.

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