Ask the master to solve the following inequality problem, remember that I am a freshman in high school 2x+3/x+2-1 /After that are molecules
2x+3/x+2
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- 1. Two inequality problems 1. Real numbers x and y satisfy the inequality X-Y ≥ 0 and Y ≥ 0 and 2x-y-2 ≥ 0 Find the value range of W = Y-1 / x + 1 2. Sequence 3 / 2, 9 / 4, 25 / 8, 65 / 16161 / 32 N*1/2^n Finding the sum of the first n terms
- 2. How to solve the univariate quadratic inequality of senior one? 1. (x-1) (the square of x-3x + 2)
- 3. The problem of solving quadratic inequality of one variable If the domain of kx2-6kx + (K + 8) under y = root is r, then the value range of K is r_____ [Note: 2 in kx2 is square, need to explain in detail]
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- 5. A mathematical problem A company is planning to organize some employees to travel to Beijing in May. Now it has contacted two travel agencies, a and B. both travel agencies offer a price of 2000 yuan per person. At the same time, both travel agencies offer preferential measures to groups with more than 10 employees: a travel agency gives 25% discount to each employee; B travel agency exempts one leader from the cost of managing employees, and the rest employees get 20% discount (1) If there are a (a > 10) employees participating in the tour, the cost of travel agency a is () The cost of B travel agency is () yuan (2) If the company now organizes 20 employees including management staff to travel to Beijing, which travel agency will be more favorable for the company? Please explain the reason. (explain the reason) 3. If we plan to travel for seven days in May, let the date in the middle be a, then the sum of the dates of the seven days is () (expressed by an algebraic expression containing a and simplified) If the sum of these seven days is a multiple of 63, what date may they start on? (write down all the possibilities that meet the conditions, and write down the simple calculation process)
- 6. 4000-5-10-15-...-95-100=?
- 7. It is known that "@" is a symbol ,2@3=2+3+4 ,7@2=7+8 ,3@5=3+4+5+6+7. According to the law of degree, if n + 8 = 68, then how much is n
- 8. There is a series of numbers "1, 1, 1, 3, 5, 9, 17, 31, 57, 105." what is the remainder of the number 2011 divided by 3
- 9. A mathematical problem of finding rules in grade one of junior high school Example: 1 / 1 × 2 = 1-1 / 2 1 / 2 × 3 = 1 / 2-1 / 3 Calculation: 1 / 1 × 3 + 1 / 3 × 5 + 1 / 5 × 7 + 1/99× 101=?
- 10. Write three different formulas with negative 6 3 4 10 so that the result is equal to 24
- 11. How to solve these inequalities 1. |ax+3|0 3. (x-1)^2(x+2) ----------------0, (a belongs to R) Thank you!
- 12. Junior one inequality problem to process, thank you for the urgent need to answer We know the equations x + y = 2m + 7 about X and y The solution of {is a positive number x-y=4m-3 (1) (2) simplify the absolute value of 3M + 2 minus the absolute value of m-5
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- 14. Inequality, x²-(3+a)x+3a>0
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- 16. An inequality problem, to process! If there is a two digit number, the number on the ten digit is 2 larger than that on the single digit, and the two digits are between 50 and 70, what are the two digits? What are the ten digit and the single digit?
- 17. If the inequality system x + 5 > 4x − 1x > m − 2 about X has five integer solutions, then the value range of M is______ .
- 18. On quadratic inequalities of one variable Given that the square of equation x + 2mx + 2-m = 0 has two real roots with the same sign but not equal, what is the value range of real number m
- 19. Quadratic inequality of one variable in junior high school mathematics What is the solution of 2x ^ 2 + 3 > 5?
- 20. A problem of filling in the blanks of inequality in elementary 2 To write ideas and steps, read after additional It is known that the system of equations 3x + y = K + 1, x + 3Y = 3, if 2