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in questions of bpp kit relating to linear programming on graph paper , like question 31 (revision kit dec 2014-june 2015) after plotting the graph and finding the optimal solution point instead of finding coordinates from the graph the solution is being found by using linear equation , in exam do we have to calculate after plotting it on graph and then using linear equations or just the approximate values are enough ?
Approximate answers are not enough.
You are required always to solve the equations and there will be marks specifically for that.
I do suggest that you watch the free lecture on linear programming where I make that very point!
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