Answer
a) option (i) is the correct answer
working:-
A + 2B = 6 .................................................(1)
If,
A | B |
0 | 3 |
6 | 0 |
As shown in the graph (i)
Now, if we put 0(zero) in place of A & B in the above equation then 0 + 0 6
Therefore the are marked will be above the line.
Similarly,
A + B = 4........................................(2)
If,
a | b |
0 | 4 |
4 | 0 |
As shown in the graph (i)
Now, if we put 0(zero) in place of A & B in the above equation then 0 + 0 4
Therefore the are marked will be above the line.
So, the common area marked will be same as in option (i)
b) To find the value of the objective function:-
coordinates of the feasible region are = (0,4) (2,2) (6,0)
now putting these values in the objective function -
(0,4) = 3 (0) + 4(4) = 16
(2,2) = 3(2) + 4(2) = 14
(6,0) = 3(6) + 4(0) = 18
Since the (2,2) give the minimum value of 14 , therefore it is the value of objective function (or the optimal solution)
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