Home › Bihar Board Class 12 (Commerce) › Mathematics › Matrices › If A = [[1, -2], [3, 0]], then 3A has first row:
If A = [[1, -2], [3, 0]], then 3A has first row:
A[1, -6]
B[3, -6]
C[4, 1]
D[3, -2]
Answer & Solution
Correct answer: B. [3, -6]
Every entry is tripled, so [1, -2] becomes [3, -6].
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