Overview: 7 questions will be solved this time.Among them
☆7 inequalities
[ 1/7Inequality]
Assignment:Find the solution set of inequality 50N11+30N21+20N31 >= 100 .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
50 * N * 11 + 30 * N * 21 + 20 * N * 31 >= 100 (1)
From inequality(1):
N ≥ 1/18
The final solution set is :
N ≥ 1/18[ 2/7Inequality]
Assignment:Find the solution set of inequality 50N12+30N22+20N32 >= 200 .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
50 * N * 12 + 30 * N * 22 + 20 * N * 32 >= 200 (1)
From inequality(1):
N ≥ 0.105263
The final solution set is :
N ≥ 0.105263[ 3/7Inequality]
Assignment:Find the solution set of inequality 50N13+30N23+20N33 >= 90 .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
50 * N * 13 + 30 * N * 23 + 20 * N * 33 >= 90 (1)
From inequality(1):
N ≥ 9/200
The final solution set is :
N ≥ 9/200[ 4/7Inequality]
Assignment:Find the solution set of inequality 50N14+30N24+20N34 >= 120 .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
50 * N * 14 + 30 * N * 24 + 20 * N * 34 >= 120 (1)
From inequality(1):
N ≥ 0.057143
The final solution set is :
N ≥ 0.057143[ 5/7Inequality]
Assignment:Find the solution set of inequality N11+N12+N13+N14 <= 5 .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
N * 11 + N * 12 + N * 13 + N * 14 <= 5 (1)
From inequality(1):
N ≤ 1/10
The final solution set is :
N ≤ 1/10[ 6/7Inequality]
Assignment:Find the solution set of inequality N21+N22+N23+N24 <= 8 .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
N * 21 + N * 22 + N * 23 + N * 24 <= 8 (1)
From inequality(1):
N ≤ 4/45
The final solution set is :
N ≤ 4/45[ 7/7Inequality]
Assignment:Find the solution set of inequality N31+N32+N33+N34 <= 10 .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
N * 31 + N * 32 + N * 33 + N * 34 <= 10 (1)
From inequality(1):
N ≤ 0.076923
The final solution set is :
N ≤ 0.076923
>>注:本次最多计算 7 道题。
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