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Standard Limits to Remove Indeterminate Form

Let * be a bi...

Question

Let * be a binary operation defined by a * b = 3a + 4b − 2. Find 4 * 5.

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Solution

Given: a * b = 3a + 4b − 2

Here,

4 * 5 = 3 (4) + 4 (5) $-$ 2
= 12 + 20 $-$ 2
= 30

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