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Properties of Determinants

Let * be a bi...

Question

Let * be a binary operation on the set I of integers, defined by a * b = 2a + b − 3. Find the value of 3 * 4.

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Solution

Given: a * b = 2a + b − 3

3 * 4 = 2 (3) + 4 $-$ 3
= 6 + 4 $-$ 3
= 7

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