If XY is greater than 0, then x / Y () 0; if XY is less than 0, then x / Y () 0

RELATED INFORMATIONS

• 1. If x of Y is greater than 0, y of Z
• 2. xy+y=yx x=?y=?
• 3. XY times YX is 3154. What is x and y It's a multiplication problem
• 4. XY YX = x what is x and y XY and YX are two digits, not multipliers
• 5. x+y=a,xy=b,xy^2+yx^2=?
• 6. First simplify, then evaluate: (6xyx + 3yxy3) − (4yxy + 36xy), where x = 32, y = 27
• 7. (6x radical Y / x + 3 / radical XY) - (4Y radical X / y + radical 36xy), where x = 3 / 2, y = 27
• 8. First simplify, then evaluate: x ^ x + XY / x ^ x-xy ^ (y ^ y-xy / XY) divided by (x + y), where x = 1 / 3, y = - 3
• 9. Simplified evaluation: (XY ^ - 1-x ^ - 1y) / (x ^ - 1 + y ^ - 1), where x = 2, y = - 1
• 10. First simplify, then evaluate: (x ^ 2-y ^ 2 / XY) / (x + y) times (x / X-Y) ^ 3, where x = - 1 / 2, y = - 1
• 11. Let x > 0, Y > 0, x + y-xy = 4, then the minimum value of 1 / x + 1 / y is
• 12. Given the equation of X, y | 6-x | + | X-2 | + | y + 2 | + | y + 3 | = 5, try to find the maximum and minimum value of XY It's still that sentence
• 13. If x + y = 5, xy = 2, then x ^ 2Y + XY ^ 2 = ()
• 14. What is the minimum value of X + y? Let x ^ 2 + y ^ 2 = 4 find the minimum value of XY + 4 (x + y) - 2~
• 15. Let x > 0, Y > 0, x + y + xy = 2, then the minimum value of X + y is () A. 32B. 1+3C. 23-2D. 2-3
• 16. If a is equal to the power of x minus the power of two times XY plus y, and B is equal to the power of x plus the power of two times XY plus y, then A-B is equal to
• 17. If the square of x plus XY equals 2 and the square of y plus XY equals 7, then what is the square of x plus 2 and the square of XY plus y
• 18. Given that x ^ 2-y ^ 2 = XY, and XY ≠ 0, then XY ^ - 1 - x ^ - 1y (the minus 1 power of XY minus the minus 1 power of X, y)
• 19. Let u = 2x + 2Y + XY + 8 and budget constraint be 5x + 10Y = 50; (2) The marginal effect of money; (3) Maximum effect
• 20. (1) , 1-xy + 4 / 4 x square y (2), 38.9-2 × 38.9 × 48.9 + 48.9 square (3), 34 square + 34 × 32 + 16 square