# Cofactor: Definition & Formula Video

Instructions:

question 1 of 3

### What is the first step towards calculating the cofactor of an element?

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### 2. When calculating the cofactor of 3 from the given matrix, which new matrix would be used to calculate the determinant? 1 7 3 2 5 9 8 4 0

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Use this quiz to make sure you know how to calculate a cofactor. Questions will ask you to pick the correct answer and to solve problems involving cofactors.

## Quiz & Worksheet Goals

• The steps for calculating a cofactor
• Signs assigned to a cofactor
• Using a matrix to solve cofactor problems

## Skills Practiced

You will also strengthen these abilities:

• Reading comprehension - ensure that you draw the most important information from the related lesson on cofactors
• Problem solving - use acquired knowledge to solve practice problems that involve calculating cofactors

Learn as much as possible about cofactors by studying the lesson entitled Cofactor: Definition & Function. Some of the information covered by this lesson includes:

• The role of a matrix in cofactor calculations
• How to find the cofactor of a matrix
• Uses for the cofactor of a matrix and the function of transposing
Final Exam
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