WEBVTT

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Here is the problem: k times A: A equals [[1, negative 2], [0, 4]].

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Compute k times A exactly.

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Read matrix A.

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Multiply every entry by k equals 3.

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Result.

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So the answer is k times A equals [[3, negative 6], [0, 12]].

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A scalar multiple scales every entry by the same number.

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All arithmetic is exact (fractions, no rounding).