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Unit 2: What is a matrix – really?

Learning Target: I will organize information using matrices, give dimensions of a matrix and identify elements of a matrix. Homework : Organizing Data into Matrices Worksheet. Unit 2: What is a matrix – really?. Sec 1: Organizing Data into Matrices. What do you think a matrix is?.

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Unit 2: What is a matrix – really?

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  1. Learning Target: I will organize information using matrices, give dimensions of a matrix and identify elements of a matrix. Homework: Organizing Data into Matrices Worksheet Unit 2: What is a matrix – really? Sec 1: Organizing Data into Matrices

  2. What do you think a matrix is?

  3. Definition • Matrix (plural: matrices) – a rectangular array of numbers written within brackets.

  4. Things you can do with a matrix • Organize Information • Add, Subtract and Multiply to find quantities quickly with large groups of information. • Find missing quantities • Solve systems of equations • Transform geometric figures: rotate, reflect, translate

  5. Ex 1: Dimensions • The number of horizontal rows and vertical columns determine the dimensions of a matrix State the dimensions of each matrix. A. B. C.

  6. Ex 2: Identifying a Matrix Element A = Find each of the following elements:

  7. Ex 3: organizing data Energy is often measured in British Thermal Units (Btu). Write a 3 x 2 matrix to represent the data above. Rewrite the information as a 2 x 3 matrix.

  8. Ex 4: Gymnastics Write a matrix W to represent the information. b. What are the dimensions of the matrix? c. Which element represents Kristin Maloney’s score on the vault?

  9. homework • Organizing Data into Matrices Worksheet

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