Bằng phương pháp hình học, hãy tìm nghiệm và giá trị tối ưu của bài toán qui hoạch tuyến tính sau đây:
Min f

(x) = −3x1 + x2


x1 + x2 ≤ 4
x2 − x1 ≥ −1
x1, x2 ≥ 0.

What describes horizontal cross section of the right rectangle 6m 8m 5m

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.

How do you determine if an ordered pair is a solution to a given equation?