Let * be a binary operation on set of integers I, defined by a * b = 2a + b –3. Find the value of 3 * 4.
The given binary operation is a*b = 2a+b-3
We have to find the value of 3*4
∴ 3*4 = 2(3) + 4 -3
= 6+ 1
= 7
Thus, the required value is 7.