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Знайдені розв’язки визначають оптимальні плани задачі, що розглядається.

8. Обчислюємо значення цільової функції в точках максимуму і мінімуму.

Координати крайніх вершин підставляємо у формулу для функції цілі L і визначаємо , відповідно, її мінімальне Lmin та максимальне Lmax значення:

Lmin = 2*0 + 5 + 5 = 10,

Lmax = 2*10 + 10 + 5 = 35.

Відповідь: Функція досягає мінімуму Lmin =10 при плані х1 = 0, х2 = 5 та максимуму Lmax = 35 при плані х1 = 10, х2 = 10.

ЗАВДАННЯ ДЛЯ САМОСТІЙНОГО ВИКОНАННЯ

№№ 101 – 200 Використовуючи графічний метод, знайти мінімум і максимум функції L при вказаних обмеженнях.

  1. L = 3x1 + x2,

x1 + 2x2 ≤ 14,

-5x1 + 3x2 ≤15,

x1 + 2x2 ≥ 8,

x1, x2 ≥ 0.

  1. L = x1 + 4x2,

4x1 - 2x2 ≤ 12,

-x1 + x2 ≤ 5,

x1 + 2x2 ≥ 8,

x1, x2 ≥ 0.

  1. L = -2x1 + x2,

x1 - x2 ≤ 3,

3x1 - 4x2 ≥ -12,

x1 ≤ 5,

x1, x2 ≥ 0.

  1. L = -2x1 + x2,

x1 + x2 ≤ 6,

x1 ≤ 5,

x2 ≤ 3,

x1, x2 ≥ 0.

  1. L = 9x1 + x2,

x1 - 5x2 ≤ 5,

-x1 + 4x2 ≤ 4,

x1 + x2 ≤ 8,

x1, x2 ≥ 0.

  1. L = 4x1 + 3x2,

x1 + x2 ≤ 6,

3x1 + 10x2 ≤ 26,

x1 + 11x2 ≤ 20,

x1, x2 ≥ 0.

  1. L = -2x1 - 5x2,

2x1 + x2 ≤ 8,

-2x1 + 3x2 ≤ 6,

2x1 + 4x2 ≥ 8,

x1, x2 ≥ 0.

  1. L = x1 + 3x2,

2x1 - x2 ≥ 4,

x1 - x2 ≥ 1,

2x1 + x2 ≤ 6,

x1, x2 ≥ 0.

  1. L = -2x1 + 5x2,

x1 + x2 ≥ 3,

x1 ≥ 2,

x2 ≤ 8,

x1, x2 ≥ 0.

  1. L = -3x1 + 6x2,

5x1 - 2x2 ≤ 4,

x1 - 2x2 ≥ -4,

x1 + x2 ≥ 4,

x1, x2 ≥ 0.

  1. L = x1 + 2x2,

5x1 - 2x2 ≤ 4,

x1 - 2x2 ≥ -4,

x1 + x2 ≥ 4,

x1, x2 ≥ 0.

  1. L = 2x1 + 5x2,

-x1 + x2 ≤ 1,

x1 - x2 ≤ 1,

x1 + x2 ≤ 2,

x1, x2 ≥ 0.

  1. L = 4x1 + 3x2,

2x1 + x2 ≤ 30,

x1 + x2 ≤ 20,

3x1 + 2x2 ≥ 6,

x1 ≤ 11, x2 ≤ 12,

x1, x2 ≥ 0.

  1. L = x1 + x2,

3x1 + 4x2 ≤ 70,

4x1 + 3x2 ≤ 70,

x1 + 2x2 ≥ 2,

x1 ≤ 13, x2 ≤ 13,

x1, x2 ≥ 0.

  1. L = 5x1 + 2x2,

2x1 + x2 ≤ 30,

5x1 + 3x2 ≤ 80,

x1 + 3x2 ≥ 3,

x1 ≤ 15, x2 ≤ 12,

x1, x2 ≥ 0.

  1. L = 2x1 + x2,

3x1 + x2 ≤ 40,

x1 + x2 ≤ 20,

2x1 + 3x2 ≥ 6,

x1 ≤ 11, x2 ≤ 11,

x1, x2 ≥ 0.

  1. L = 7x1 + 3x2,

3x1 + x2 ≤ 40,

3x1 + 2x2 ≤ 50,

x1 + x2 ≥ 1,

x1 ≤ 13, x2 ≤ 11,

x1, x2 ≥ 0.

  1. L = 5x1 + 3x2,

5x1 + 2x2 ≤ 70,

5x1 + 4x2 ≤ 50,

3x1 + x2 ≥ 3,

x1 ≤ 15, x2 ≤ 12,

x1, x2 ≥ 0.

  1. L = x1 + x2,

3x1 + 5x2 ≤ 80,

5x1 + 3x2 ≤ 80,

x1 + 3x2 ≥ 3,

x1 ≤ 13, x2 ≤ 13,

x1, x2 ≥ 0.

  1. L = 6x1 + 5x2,

3x1 + 2x2 ≤ 50,

x1 + x2 ≤ 20,

x1 + 2x2 ≥ 2,

x1 ≤ 11, x2 ≤ 12,

x1, x2 ≥ 0.

  1. L = 7x1 + 4x2,

2x1 + x2 ≤ 30,

7x1 + 5x2 ≤ 120,

x1 + 2x2 ≥ 4,

x1 ≤ 17, x2 ≤ 11,

x1, x2 ≥ 0.

  1. L = 2x1 + x2,

3x1 + x2 ≤ 40,

2x1 + 3x2 ≤ 50,

x1 + x2 ≥ 2,

x1 ≤ 11, x2 ≤ 12,

x1, x2 ≥ 0.

  1. L = 3x1 + x2,

4x1 + x2 ≤ 50,

3x1 + 2x2 ≤ 50,

3x1 + x2 ≥ 6,

x1 ≤ 13, x2 ≤ 11,

x1, x2 ≥ 0.

  1. L = 7x1 + 5x2,

6x1 + 5x2 ≤ 110,

x1 + x2 ≤ 20,

2x1 + x2 ≥ 2,

x1 ≤ 11, x2 ≤ 15,

x1, x2 ≥ 0.

  1. L = 5x1 + 4x2,

5x1 + 3x2 ≤ 80,

x1 + x2 ≤ 20,

2x1 + x2 ≥ 4,

x1 ≤ 11, x2 ≤ 13,

x1, x2 ≥ 0.

  1. L = 7x1 + 6x2,

2x1 + x2 ≤ 30,

4x1 + 5x2 ≤ 90,

x1 + x2 ≥ 4,

x1 ≤ 14, x2 ≤ 11,

x1, x2 ≥ 0.

  1. L = x1 + x2,

x1 + 2x2 ≤ 30,

2x1 + x2 ≤ 30,

3x1 + x2 ≥ 6,

x1 ≤ 12, x2 ≤ 12,

x1, x2 ≥ 0.

  1. L = 3x1 + 2x2,

3x1 + x2 ≤ 40,

x1 + x2 ≤ 20,

x1 + 4x2 ≥ 8,

x1 ≤ 12, x2 ≤ 11,

x1, x2 ≥ 0.

  1. L = x1 + 2x2,

x1 + 3x2 ≤ 40,

x1 + x2 ≤ 20,

4x1 + x2 ≥ 8,

x1 ≤ 11, x2 ≤ 11,

x1, x2 ≥ 0.

  1. L = 3x1 + 4x2,

x1 + 2x2 ≤ 30,

x1 + x2 ≤ 20,

2x1 + x2 ≥ 8,

x1 ≤ 12, x2 ≤ 11,

x1, x2 ≥ 0.

  1. L = 3x1 + 7x2,

x1 + 3x2 ≤ 40,

2x1 + 3x2 ≤ 50,

x1 + x2 ≥ 5,

x1 ≤ 11, x2 ≤ 13,

x1, x2 ≥ 0.

  1. L = 2x1 + 5x2,

x1 + 2x2 ≤ 30,

3x1 + 5x2 ≤ 80,

x1 + x2 ≥ 3,

x1 ≤ 12, x2 ≤ 15,

x1, x2 ≥ 0.

  1. L = x1 + 3x2,

x1 + 4x2 ≤ 50,

2x1 + 3x2 ≤ 50,

x1 + 2x2 ≥ 6,

x1 ≤ 11, x2 ≤ 13,

x1, x2 ≥ 0.

  1. L = 4x1 + 5x2,

3x1 + 5x2 ≤ 80,

x1 + x2 ≤ 20,

3x1 + 2x2 ≥ 6,

x1 ≤ 13, x2 ≤ 11,

x1, x2 ≥ 0.

  1. L = 3x1 + 5x2,

2x1 + 5x2 ≤ 70,

4x1 + 5x2 ≤ 90,

3x1 + x2 ≥ 6,

x1 ≤ 12, x2 ≤ 15,

x1, x2 ≥ 0.

  1. L = 5x1 + 6x2,

2x1 + 3x2 ≤ 50,

x1 + x2 ≤ 20,

x1 + 2x2 ≥ 8,

x1 ≤ 12, x2 ≤ 11,

x1, x2 ≥ 0.

  1. L = 2x1 + 3x2,

x1 + 3x2 ≤ 40,

x1 + x2 ≤ 20,

2x1 + x2 ≥ 6,

x1 ≤ 11, x2 ≤ 12,

x1, x2 ≥ 0.

  1. L = 6x1 + 7x2,

x1 + 2x2 ≤ 30,

5x1 + 4x2 ≤ 90,

x1 + x2 ≥ 4,

x1 ≤ 11, x2 ≤ 14,

x1, x2 ≥ 0.

  1. L = 5x1 + 7x2,

5x1 + 6x2 ≤ 110,

x1 + x2 ≤ 20,

x1 + 3x2 ≥ 6,

x1 ≤ 15, x2 ≤ 11,

x1, x2 ≥ 0.

  1. L = x1 + x2,

2x1 + 3x2 ≤ 50,

3x1 + 2x2 ≤ 50,

x1 + 4x2 ≥ 8,

x1 ≤ 12, x2 ≤ 15,

x1, x2 ≥ 0.

  1. L = 4x1 + 7x2,

x1 + 2x2 ≤ 30,

5x1 + 7x2 ≤ 120,

2x1 + 3x2 ≥ 12,

x1 ≤ 11, x2 ≤ 17,

x1, x2 ≥ 0.

  1. L = x1 + 2x2,

-x1 + 5x2 ≤ 19,

x1 - x2 ≤ 1,

3x1 + x2 ≥ 7,

x1, x2 ≥ 0.

  1. L = x1 + x2,

x1 + x2 ≥ 1,

-5x1 + x2 ≤ 0,

-x1 + 5x2 ≥ 0,

x1 + x2 ≤ 6,

x1, x2 ≥ 0.

  1. L = x1 + x2,

x1 + 3x2 ≤ 40,

3x1 + 2x2 ≤ 50,

x1 + x2 ≥ 5,

x1 ≤ 12, x2 ≤ 11,

x1, x2 ≥ 0.

  1. L = x1 + x2,

5x1 - 2x2 ≤ 7,

-x1 + x2 ≤ 5,

x1 + x2 ≤ 6,

x1, x2 ≥ 0.

  1. L = -2x1 + x2,

2x1 + x2 ≤ 8,

x1 + 3x2 ≥ 6,

3x1 + x2 ≥ 3,

x1, x2 ≥ 0.

  1. L = 2x1 - 4x2,

8x1 - 5x2 ≤ 16,

x1 + 3x2 ≥ 2,

2x1 + 7x2 ≤ 9,

x1, x2 ≥ 0.

  1. L = 2x1 - x2,

x1 - x2 ≥ -3,

6x1 + 7x2 ≤ 42,

2x1 - 3x2 ≤ 6,

x1, x2 ≥ 0.

  1. L = -2x1 + x2,

2x1 + x2 ≤ 8,

x1 + x2 ≤ 6,

-3x1 + 2x2 ≥ 3,

x1, x2 ≥ 0.

  1. L = 3x1 + x2,

3x1 + 5x2 ≥ 15,

5x1 + 3x2 ≥ 15,

x1 ≥ 1, x2 ≥ 1,

x1, x2 ≥ 0.

  1. L = 4x1 + 6x2 + 6,

2x1 - 3x2 ≤ 12,

-x1 + 2x2 ≤ 8,

3x1 + 2x2 ≤ 24,

x1, x2 ≥ 0.

  1. L = 7x1 + 5x2,

7x1 + 5x2 ≥ 7,

7x1 – 5x2 ≥ 35,

x1 - x2 ≤ 0,

x1, x2 ≥ 0.

  1. L = 3x1 + 2x2 – 10,

2x1 - x2 ≥ 0,

2x1 + 3x2 ≥ 6,

x1 - 2x2 ≤ 4,

x1, x2 ≥ 0.

  1. L = 4x1 + 3x2 + 25,

4x1 + x2 ≥ 8,

x1 - x2 ≤ 5,

7x1 + 10x2 ≤ 70,

x1, x2 ≥ 0.

  1. L = x1 + 2x2 - 5,

5x1 - 2x2 ≤ 4,

-x1 + 2x2 ≤ 4,

x1 + x2 ≥ 4,

x1, x2 ≥ 0.

  1. L = 7x1 + 5x2 + 20,

3x1 + 8x2 ≥ 24,

2x1 - x2 ≤ 6,

-x1 + 2x2 ≤ 4,

x1, x2 ≥ 0.

  1. L = -3x1 - 2x2 +15,

x1 - 4x2 ≤ 0,

-3x1 + x2 ≤ 3,

6x1 + 5x2 ≥ 30,

x1, x2 ≥ 0.

  1. L = 2x1 + 5x2 + 12,

6x1 + 5x2 ≥ 30,

3x1 - 2x2 ≤ 12,

-3x1 + 6x2 ≤ 12,

x1, x2 ≥ 0.

  1. L = 6x1 + 4x2 + 20

2x1 + x2 ≥ 4,

x1 + 2x2 ≥ 4,

-x1 + x2 ≤ 5,

x1, x2 ≥ 0.

  1. L = -7x1 - 4x2 + 15,

3x1 - 2x2 ≤ 12,

3x1 + 2x2 ≥ 6,

-x1 + 2x2 ≥ 4,

x1, x2 ≥ 0.

  1. L = x1 + x2 – 2,

5x1 - 2x2 ≤ 7,

x1 - x2 ≥ -5,

x1 + x2 ≤ 6,

x1, x2 ≥ 0.

  1. L = 2x1 + 3x2 + 16,

2x1 - 5x2 ≤ 10,

-2x1 + 5x2 ≤ 10,

2x1 + 3x2 ≥ 12,

x1, x2 ≥ 0.

  1. L = 4x1 + 3x2 +5,

x1 - x2 ≥ 0,

x1 + 3x2 ≥ 6,

2x1 - 3x2 ≤ 21,

x1, x2 ≥ 0.

  1. L = -x1 + 2x2 – 3,

5x1 - 2x2 ≤ 4,

-x1 + 2x2 ≤ 4,

x1 + x2 ≥ 4,

x1, x2 ≥ 0.

  1. L = 8x1 + 2x2,

x1 - 4x2 ≤ 4,

-4x1 + x2 ≤ 4,

x1 + x2 ≤ 6,

x1, x2 ≥ 0.

  1. L = -2x1 + x2,

4x1 + 3x2 ≥ 22,

2x1 + 5x2 ≥ 22,

x1 - x2 ≤ 2,

x1, x2 ≥ 0.

  1. L = -x1 + 2x2,

5x1 + 2x2 ≤ 37,

x1 - x2 ≤ -1,

2x1 + 5x2 ≥ 19,

x1, x2 ≥ 0.

  1. L = -3x1 + 6x2,

5x1 - 2x2 ≥ 4,

x1 - 2x2 ≤ -4,

x1 + x2 ≥ 4,

x1, x2 ≥ 0.

  1. L = x1 + x2,

x1 + x2 ≥ 2,

-5x1 + x2 ≤ 0,

-x1 + 5x2 ≥ 0,

x1 + x2 ≤ 5,

x1, x2 ≥ 0.

  1. L = 3x1 + 5x2 + 20,

2x1 + 3x2 ≥ 11,

x1 + x2 ≤ 5,

x1 ≤ 2, x2 ≤ 4,

x1, x2 ≥ 0.

  1. L = -5x1 + 3x2,

3x1 + 2x2 ≤ 18,

-x1 + x2 ≤ 3,

5x1 + 2x2 ≥ 10,

x1 - 2x2 ≤ 4,

x1, x2 ≥ 0.

  1. L = 2x1 - 2x2,

-x1 + 4x2 ≥ 10,

2x1 + 3x2 ≥ 13,

3x1 - x2 ≥ 14,

x1 + x2 ≤ 20,

x1, x2 ≥ 0.

  1. L = x1 + 2x2,

2x1 + 3x2 ≤ 23,

4x1 - x2 ≥ 11,

x1 - 2x2 ≤ 1,

x1, x2 ≥ 0.

  1. L = 3x1 + x2,

3x1 + 5x2 ≤ 15,

x1 ≥ 1,

x2 ≥ 1,

x1, x2 ≥ 0.

  1. L = 7x1 - 4x2,

3x1 - 2x2 ≤ 15,

3x1 - 2x2 ≥ 6,

-x1 + 2x2 ≤ 4,

x1, x2 ≥ 0.

  1. L = -3x1 - 4x2 – 20,

3x1 + 4x2 ≥ 12,

-4x1 + 3x2 ≤ 12,

x1 - 2x2 ≤ 4,

x1, x2 ≥ 0.

  1. L = -7x1 - 6x2 + 19,

x1 + 2x2 ≤ 10,

2x1 + x2 ≤ 10,

x1 + x2 ≥ 2,

x1, x2 ≥ 0.

  1. L = 6x1 + 5x2 – 30,

x1 + 2x2 ≥ 8,

2x1 + x2 ≥ 8,

2x1 - x2 ≥ 0,

x1, x2 ≥ 0.

  1. L = 2x1 + 3x2 + 16,

5x1 - 2x2 ≤ 10,

x1 + x2 ≤ 3,

4x1 + 3x2 ≥ 13,

x1, x2 ≥ 0.

  1. L = 9x1 + 3x2 + 8,

-5x1 + 4x2 ≤ 20,

5x1 - 4x2 ≤ 20,

8x1 + 7x2 ≤ 56,

x1, x2 ≥ 0.

  1. L = 4x1 + 7x2,

5x1 + 3x2 ≥ 15,

x1 + x2 ≤ 6,

-5x1 + x2 ≤ 0,

x1, x2 ≥ 0.

  1. L = 3x1 + 2x2 – 10,

2x1 - x2 ≥ 0,

2x1 + 3x2 ≥ 6,

x1 - 2x2 ≤ 4,

x1, x2 ≥ 0.

  1. L = 7x1 + 4x2 + 40,

9x1 - 5x2 ≤ 36,

-x1 + 3x2 ≤ 9,

7x1 + 6x2 ≤ 42,

x1, x2 ≥ 0.

  1. L = -7x1 - 4x2 + 15,

3x1 - 2x2 ≤ 12,

3x1 + 2x2 ≥ 6,

-x1 + 2x2 ≤ 4,

x1, x2 ≥ 0.

  1. L = 8x1 + 4x2 + 22,

x1 - 2x2 ≤ 0,

-x1 + x2 ≤ 8,

10x1 + 9x2 ≤ 90,

x1, x2 ≥ 0.

  1. L = -5x1 - 2x2,

4x1 + 3x2 ≤ 24,

x1 + x2 ≥ 2,

x1 - 2x2 ≤ 2,

x1, x2 ≥ 0.

  1. L = -x1 + 3x2 + 20,

2x1 + 3x2 ≥ 11,

x1 + x2 ≤ 5,

x1 ≤ 2, x2 ≤ 5,

x1, x2 ≥ 0.

  1. L = x1 + 2x2,

2x1 + 3x2 ≥ 3,

-x1 + 2x2 ≤ 1,

3x1 - x2 ≤ 6,

x1, x2 ≥ 0.

  1. L = 4x1 + 2x2 – 20,

x1 + 2x2 ≥ 5,

2x1 - x2 ≥ 0,

x2 ≤ 5,

x1, x2 ≥ 0.

  1. L = 3x1 + 2x2,

x1 - 3x2 ≤ 3,

-4x1 + 3x2 ≤ 24,

x1 ≥ 6,

x1, x2 ≥ 0.

  1. L = 7x1 + 3x2 + 30,

10x1 + 9x2 ≤ 90,

-x1 + 2x2 ≤ 6,

6x1 + 5x2 ≤ 30,

x1, x2 ≥ 0.

  1. L = 7x1 + 4x2 + 40,

9x1 - 5x2 ≤ 36,

-x1 + 3x2 ≤ 9,

7x1 + 6x2 ≤ 42,

x1, x2 ≥ 0.

  1. L = 4x1 + 6x2 + 20,

8x1 + 7x2 ≤ 56,

3x1 + 5x2 ≥ 15,

5x1 + 3x2 ≥ 15,

x1, x2 ≥ 0.

  1. L = -3x1 + 2x2 + 10,

x1 - x2 ≤ 10,

x1 + x2 ≥ 2,

-x1 + x2 ≤ 2,

x1, x2 ≥ 0.

  1. L = -3x1 - 2x2 + 14,

2x1 + x2 ≥ 4,

x1 + x2 ≤ 4,

-x1 + 2x2 ≤ 6,

x1, x2 ≥ 0.

  1. L = -4x1 - 3x2 + 15,

6x1 + 3x2 ≤ 24,

-4x1 + x2 ≤ 12,

3x1 - x2 ≤ 12,

x1, x2 ≥ 0.

  1. L = -4x1 - 3x2 + 8,

4x1 + 5x2 ≤ 20,

7x1 + 3x2 ≤ 21,

2x1 + x2 ≥ 2,

x1, x2 ≥ 0.

  1. L = -3x1 + 6x2 + 20,

5x1 + 2x2 ≤ 20,

x1 + 3x2 ≥ 6,

x1 ≥ 2,

x1, x2 ≥ 0.

  1. L = 3x1 + 2x2 + 10,

x1 - x2 ≤ 10,

x1 + x2 ≥ 2,

-x1 + x2 ≤ 1,

x1, x2 ≥ 0.

  1. L = 7x1 + 5x2 + 20,

3x1 + 8x2 ≥ 24,

2x1 - x2 ≤ 6,

-x1 + 2x2 ≤ 4,

x1, x2 ≥ 0.