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Matrices: Basic (Matrix) Instinct True or False

1.

For this matrix, the following is true:->e11 = 2

2. What's the coefficient matrix for the following system of equations?

3x – 4y = 2

x + 2y = 5->

3. For this matrix, find the determinant:

->12

4. What is the formula to find the determinant of a 2 × 2 matrix?

->ad – cb


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