What is the determinant of a 2x2 matrix [[3, 4], [2, 5]]?
What is the determinant of a 2x2 matrix [[3, 4], [2, 5]]?
Approach: ad - bc.
7. (3 * 5) - (4 * 2) = 15 - 8 = 7.
Follow-up: Is the matrix invertible?
Key concepts: determinants.
What is the determinant of a 2x2 matrix [[3, 4], [2, 5]]?
Approach: ad - bc.
7. (3 * 5) - (4 * 2) = 15 - 8 = 7.
Follow-up: Is the matrix invertible?
Key concepts: determinants.