![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
A mathematical problem about basic inequality In 4 /? + 9 /? = 1, fill in a positive integer respectively and make their sum minimum, then they are____ ,_____ . I only know if it's reasonable after I read it myself
4/x+9/y=1
2*2/x+3*3/y=1
5/(2/x+2/x+3/y+3/y+3/y)
RELATED INFORMATIONS
- 1. A basic inequality problem in liberal arts mathematics If positive numbers a and B satisfy a + B + 1 = AB, then the minimum value of 3A + 2b is______
- 2. The basic properties of inequality (1) If a > b, then () A.ac>bc B.acb-c D.ac>b (2) If a > b, b > D, D ≥ m, then () A. A > m B. a ≥ m C. ABC, then () A.a>b B.a5 } B.{ a | a≥5 } C.{a | a＜5 } D.{a | a≤5 } (5) If A3, then () A.3 5 (8) If 2a-1 / 5 is less than a + 2 / 3, then the value range of real number a is () A.{a|a>7} B.{a|a2a B 3+a>2+a C.3+a>3-a D.3/a>2/a (10) If a > b, there must be () A.a-b>2 B.a-3b+2 D.a/-3>b/-3 (11) If real numbers a and B satisfy A-B ≤ 0, the correct one in the following inequality is () A.ab D.a≤b (12) A > b, then () A.a+3 >b+3 B.3a>3b C.-5a>-5b D.a/3>b/3 (13) The correct one in the following proposition is () A. If a > b, then AC > BC B. If a > C, then AC & # 178; > BC & # 178; C. if AC & # 178; > BC & # 178; then a > b D. if a > b, C > D, then AC > BD
- 3. If the solution of the inequality (3x + a) / (- 13) about X is less than (3-x) / 2 and X is less than 7, find a
- 4. Maverick, a volunteer of the Asian Games, is a warm-hearted student. On this day, he takes the list of competitors of a certain competition and is going to take the Asian Games bus from venue a to venue B to check the competitors, The average speed of the Asian Games bus is 40 km / h. on the way, Mavericks see many foreign tourists want to watch the Asian Games, but they can't find the venue because of their poor voice. At this time, Mavericks are in a dilemma. They want to help foreign tourists, but they are afraid that they can't catch up with venue B within the specified time. Please help Mavericks figure out how long they can help foreign tourists at most?
- 5. 1、x-8＜3x-2 2、x-2＞2x-7 7-x≥2x-2 x+2＞11-2x
- 6. The connection of junior high school mathematics and senior high school mathematics Solution inequality: (A-1) x2-ax + 1 > 0 The book discussed the idea and basis in the process 3Q!
- 7. System of inequalities 1. The square of X - 5x + 6 ≤ 0 2. The square of 4x + 4x + 1 ≤ 0 3、x-2/x+4＞0 4、x/x+1≤0 5. The solution of inequality (AX-1) (x + 1) > 0 (a ∈ R) about X System of inequalities 1. The square of {X-2 ＞ 0 The square of {X-2 ≤ 4 2、{1/x-2＜0 The square of {- x + 3x ≥ 0
- 8. Connection of mathematics knowledge between junior high school and senior high school (1) 2. According to the graph of quadratic function y = AX2 + BX + C (a > 0), we discuss the solution set of the following inequality (expressed by interval) （1）ax2+bx+c>0 (a>0)； （2）ax2+bx+c0)．
- 9. Let {A1, A2} (add a ≠ under the inverted "∪" on the right) M &; {A1, A2, A3, A4, A5} set M be? The bracket above indicates the symbol of true subset The number of M is more than {A1, A3} I know, but M is contained in {A1, A2, A3, A4, A5}, so all the elements of M are contained in that string. How can the number of M be more than 5? 2) - x ^ 2 + x-4 > 0 to change - x to x ^ 2 + x-4 is not the same sign to change direction?
- 10. English radio 1、---Dear ,I 'm going to have a meeting in three minutes .Shall we talk about it later? ---No,I'd rather talk about it now .-------------------- Ayou are adsolutely right BI''ll do my best CAre you kidding? DI'll put it in a nutshell 2、It's no use having so much nutritious soup,because your body can't ------so much all at once Atake in Btake over Ctake up Dtake on
- 11. The basic inequality of Mathematics 1. If x > 1, Y > 1 and lgx + lgY = 4, then the maximum value of lgx * lgY is A.4 B.2 C.1 D.1/4 2. It is known that P > 0, Q > 0, and the median of P and Q is 1 / 2. If x = P + 1 / P, y = q + 1 / Q, then the minimum value of X + y is a.3b.4c.5d.6 3. Given a ≥ - 1 / 2, B ≥ - 1 / 2, and a + B = 1, then the maximum value of √ (2a + 1) + √ (2B + 1) is_______
- 12. How many four digit numbers are composed of 0, 1, 2 and 3? What formula is used? Can you list these 18 numbers? Let me have a deeper understanding of this type of questions.
- 13. Oxford grade 7 Volume 1 English practice Ask for the answer on page 6 Today is the day Grammar:A , B, C, D. and Listening:A B, C, D. lesson one, please,
- 14. Set the coordinates (x, y) of point P, and determine the position of point P in the coordinate plane according to the following conditions: (1) xy = 0; (2) XY > 0; (3) x + y = 0
- 15. Let the angles between two different unit vectors a = (x1, y1,0), B = (X2, y2,0) and C = (1,1,1) in space be equal to π / 4, and find the values of X1 + Y1 and x1 · Y1
- 16. Given the function f (x) = ax-b / x-2lnx, f (1) = 0 (1) If the tangent slope of function image at x = 1 is 0, and a (n + 1) = f '{1 / [a (n) - N + 1]} - n ^ 2 + 1, we know that a (1) = 4, and prove that a (n) is not less than 2n + 2 (2) Under the condition of (1), the relationship between sum (from 1 to n) 1 / [1 + a (I)] and 0.4 was compared
- 17. (2a to the third power + 6a) / a calculation Application of factorization
- 18. The square of X - (a + B + CD) * x + (a + b) to the power of 2011 + (- CD) to the power of 2013
- 19. Given 〡 X-2 〡 + (3-y) ² = 0, find the values of the following formulas, (1) the square of y of X, (2) xy-xy of X
- 20. Given X-Y / xy = 2, find the fraction 7x-5xy-7y / 5x-5y