if A = [1, 2, 3; 2, 3, 1] and B = [3, -1, 3; -1, 0, 2] then find 2A-B.

Question

TextAddition of MatricesMultiplication of a Matrix by a Scalar

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If A = [3 4; 5 2] and 2A + B is a null matrix, then B is equal to :

If x[1 2] + y[2 5] = [4 9], then :

If A = [[3, 2, 0], [1, 4, 0], [0, 0, 5]], then compute A² − 7A + 10 I.

If A = [[1, 2, 2], [2, 1, 2], [2, 2, 1]], then compute A² − 4A – 5I.

If A = [[2, 0, 1], [2, 1, 3], [1, −1, 0]], then compute A² − 5A + 4I.

Let A = [[0, –3, 4], [1, 0, 2]] and B = [[–3, 0, 1], [2, 4, 0]]. If A + B + C = O, then matrix C is :