Question

In: Math

Write the following linear program in standard form. If your answer is zero, enter “0”. If...

Write the following linear program in standard form. If your answer is zero, enter “0”. If the constant is "1" it must be entered in the box.

Max 12A + 6B
s.t.
A 2B 420
6A + 8B 1,300
10A 2B 250
A, B ≥ 0
A + B + S1 + S2 + S3
s.t.
A B + S1
A + B + S2
A B + S3
A, B, S1, S2, S3

Solutions

Expert Solution

The standard form is obtained as follows :

• all variables involved are restricted to be non-negative.

• all constraints are equalities , with constant, non-negative right-hand sides.

Converting may require new variables and rearranging constraints:

• an inequality can be multiplied by −1 to get non-negative RHS.

• inequalities can be converted to equalities by adding or subtracting non-negative slack variables.

• Unrestricted variables can be dealt with by writing the variable as the difference of two new non-negative variables.

We have given the following problem :

Max Z = 12A + 6B

s.t.

A - 2B ≤ 420

6A + 8B ≤ 1300

10A - 2B ≤ 250

A, B ≥ 0

To convert to standard form, we introduce three new slack variables, s1 ≥ 0 , s2 ≥ 0 and s3 ≥ 0.

The standard form of above problem is as follows :

Max Z = 12A + 6B + 0s1 + 0s2 + 0s3

s.t.

A - 2B + s1 = 420

6A + 8B + s2 = 1300

10A - 2B + s3 = 250

A, B, s1, s2 and s3 ≥ 0.


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