# Calculus 3 : Matrices

## Example Questions

### Example Question #2731 : Calculus 3

Evaluate the matrix operation      Explanation:

To find the sum of 2 2x2 matrices, we use the formula: Applying to the matrices from the problem statement, we get: ### Example Question #2732 : Calculus 3

Find the determinant of the 2x2 matrix given:      Explanation:

To find the determinant of a 2x2 matrix , we use the formula: Using the vector from the problem statement, we get: ### Example Question #2733 : Calculus 3

Find the determinant of the matrix:      Explanation:

The determinant of a two-by-two matrix is given by (The process is similar to the finding the cross product using a three-by-three matrix, where one moves from top left to bottom right, and then subtracts the result of moving from top right to bottom left).

Our final answer is .

### Example Question #2734 : Calculus 3

Find the determinant of the 3x3 matrix      Explanation:

To find the determinant of a 3x3 matrix , we use the formula Using the matrix from the problem statement, we get ### Example Question #141 : Matrices

Find the determinant of the 2x2 matrix      Explanation:

To find the determinant of a 2x2 matrix ,

we use the formula Using the matrix from the problem statement, we get ### Example Question #142 : Matrices

Find the determinant of the 2x2 matrix      Explanation:

To find the determinant of a 2x2 matrix ,

we use the formula Using the matrix from the problem statement, we get ### Example Question #741 : Vectors And Vector Operations

Find the determinant of the 3x3 matrix      Explanation:

To find the determinant of a 3x3 matrix , we use the formula Using the matrix from the problem statement and applying, we get ### Example Question #742 : Vectors And Vector Operations

Find the determinant of the 3x3 matrix      Explanation:

To find the determinant of a 3x3 matrix , we use the formula Using the matrix from the problem statement and applying, we get ### Example Question #743 : Vectors And Vector Operations

Find the determinant of the 2x2 matrix      Explanation:

To find the determinant of a 2x2 matrix we use the definition: Applying to the matrix from the problem statement, we get ### Example Question #744 : Vectors And Vector Operations

Find the determinant of the 2x2 matrix      Explanation:

To find the determinant of a 2x2 matrix , we apply the definition: Using the matrix from the problem statement, we get  