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प्रश्न
Let * be a binary operation on set of integers I, defined by a * b = 2a + b − 3. Find the value of 3 * 4.
उत्तर
Given: a * b = 2a + b − 3
Here,
3 * 4 = 2 (3) + 4 \[-\] 3
= 6 + 4 \[-\] 3
= 7
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| * | 1 | 2 | 3 | 4 | 5 |
| 1 | 1 | 1 | 1 | 1 | 1 |
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| 4 | 1 | 2 | 1 | 4 | 1 |
| 5 | 1 | 1 | 1 | 1 | 5 |
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