Inequality with absolute value in the first grade of Higher Education Inequality | x + 2 | greater than or equal to | x I'm a preview. Don't laugh at me

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• 1. A problem of absolute value inequality with parameters in the first grade of Higher Education If / X-1 / ≤ 2 and / x-a / ≤ 2 are known, the value range of X is obtained when a > 0; It's not comprehensive enough
• 2. The solution of inequality with absolute value in the first grade of Higher Education Given p = {a | A-1 | ≤ 2}, t = {a | A-B | ≤ 2}, if P ∩ t ≠ empty set, the value range of B is obtained This problem I calculate - 1 ≤ a ≤ 3, later want to ask how to do |ax+3|0,A={x||x-a|
• 3. The solution format of inequality with absolute value in higher one X-3 ≤ x I think the reference answers are written in x0 discussion The solution set is {x x ≥ 3 / 2} I have some ideas, but I don't know how to write them Because the examples in the book are not very deep. So I don't know how to write the format Another question: It is known that a = {X-1 ≥ a}, B = {X-6}
• 4. .. 1. 1 / 2-x ≥ 2 2. X + 1 of X │ > x + 1 of X 3.│x^2-3│
• 5. Given the set a = {x | X-2 | 0}, B = {x | x-3 | > 4, and a ∩ B = empty set, find the value range of real number C The answer is this: I only write part of it When 0
• 6. emergency There are two questions 1. When | X-2|
• 7. Higher one absolute value inequality Solving inequality | X / (1 + x) | X / (1 + x)
• 8. 1: What is the solution set of inequality x x ≥ x? 2: If the solution set of inequality ax square + BX + 2 > 0 is (- 1 / 2, 1 / 3), then the value of a + B is? 3: Let u = R, a = {Xmx square + 8mx + 21 ＞ 0} complement a = empty set, then the value range of M is? 4: When there is exactly one solution in inequality 2 ≤ x square + PX + 10 ≤ 6, the value of real number P is? 5: If the inequality x-4x + 3 ＜ 0 and x-6x + 8 ＜ 0 hold at the same time, the value of X satisfies the inequality 2x-9x + a ＜ 0, then the value range of a is? 6: The solution set of inequality 1 ﹤ x + 1 ﹤ 3 is? 7: The solution set of inequality (1 - x) (1 + x) > 0 is? 8: When X-2 ＜ a, the inequality x square-4 ＜ 1 holds, then the value range of positive number a is? 9: If the solution set of inequality MX square + 3 ＞ 2 about X is a, and a is really included in R, then the value range of real number m is? 10: What is the solution set of the inequality x + 2 / X ＞ x + 2 / x? 11: If the solution set of inequality ax + 2 < 6 is (- 1,2), then the real number a is equal to?
• 9. Mathematical inequality of senior one A=(x l l2x-4l
• 10. A mathematical problem of filling in the blanks (basic inequality and its application) If x < 0, then x + 1 / X - 2 It's x + 1 / X () - 2
• 11. |2x+3|-|2x-5|>6 How to solve excuse me? Had better say specific point amount |1-2x | / | x | > - 1 also help.
• 12. The solution of three higher absolute value inequalities 1、|ax+b|>c,(c>0) 2、28
• 13. Ask for help to solve a high one absolute value inequality 5＜|2X+3|+X≤11 Hope to attach a detailed solution
• 14. A higher one solution absolute value inequality |X | > | a | is equivalent to A. X > plus or minus a B.-a
• 15. Practical problems (solved by inequality) There is a group of monkeys, a total of 149, one day to steal peaches, peach, if each monkey points five, then there is a monkey points Taenia less than five, you can find at least a few monkeys?
• 16. In order to build a "Scholarly Campus", a school plans to use no more than 1900 science and technology books and 1620 personal literature books to set up a total of 30 small and medium-sized book corners. It is known that to set up a medium-sized book corner, 80 science and technology books and 50 humanities books are needed; to set up a small book corner, 30 science and technology books and 60 humanities books are needed. (1) what are the construction plans in line with the theme How many? Please help the school design; (2) if the cost of setting up a medium-sized book corner is 860 yuan, and that of setting up a small book corner is 570 yuan, which one is the lowest in (1)? How much is the minimum charge?
• 17. How to solve the application problem of inequality If we use the existing chemical fertilizer to fertilize the paddy field, if we use 50 kg per hectare, then there is still 80 kg less; if we use 40 kg per hectare, then there is 220 kg more?
• 18. In a sales promotion, a store stipulates that consumers can enjoy a discount if they spend more than 200 yuan or more. A classmate buys a prize for his class and plans to buy 6 albums and several pens. It is known that each album costs 15 yuan and each pen costs 8 yuan. How many pens can he buy at least to get a discount?
• 19. Column inequalities to solve application problems A type a pump, which can pump 1.1 tons of water per minute, can pump water in half an hour. If B type pump is used, it is estimated that it can pump water in 20 minutes. How many tons more water can b type pump pump pump pump than a type pump per minute Use the system of linear inequalities of one variable to solve it! Using a type a pump which can pump 1.1 tons of water per minute to pump the pool can be finished in half an hour; if using B type pump, it is estimated that it can be finished in 20 to 22 minutes. How many tons more water can be pumped by B type pump than a type pump per minute? I'm sorry,
• 20. In order to support the reconstruction of the earthquake stricken area of Yushu, Qinghai Province, a company rented eight trucks of different models a and B to transport 250 cases of drugs and 370 cases of daily necessities to Yushu, Qinghai Province. It is known that a type a truck can transport 30 cases of drugs and 50 cases of daily necessities, and a type B truck can transport 50 cases of drugs and daily necessities Supplies 40 cases. What kind of car rental scheme do you have? Please help to design it