If a > 1, - 1
For example, to compare the size of AB and AB, use AB and ab = AB (B-1). Obviously, a is a positive number, B is a negative number, AB is negative, B-1 is also negative, negative is positive, so AB and ab are 178; - AB = AB (B-1)
RELATED INFORMATIONS
- 1. Let a and B belong to R. compare the relationship between a square + b square + 1 and ab + A + B
- 2. In the reaction A2 + 2ab2 = 4AB, 1g & nbsp; A2 reacts with enough AB2 to produce 5g AB, then the ratio of molecular weight of A2 to AB2 is () A. 3:4B. 4:3C. 1:2D. 2:1
- 3. 2 (A2 + AB2) - 2 (a2b-1) - 2ab2-2, branch
- 4. AB two times the product of the number, is it 2Ab or AB2 or AB 2 square! Please master answer!
- 5. What are the times and items of the polynomial AB2 + 25 in Grade 7 (AB2 is actually the 2nd power of AB, and 25 is the 5th power of 2)
- 6. AC = (AB2 power + BC2 power) 1 / 2 = 5, ab = 3 m, BC = 4 m How to calculate? Can you write the calculation process
- 7. Given AB = 7, a + B = 6, then the value of polynomial A2B + AB2 is______ .
- 8. Given AB = 7, a + B = 6, then the value of polynomial A2B + AB2 is______ .
- 9. If a + B = 6, ab = 7, then the value of A2B + AB2?
- 10. According to the law of conservation of mass, the chemical formula of substance C is () A.A2B B.AB2 C.AB3 D.AB Why C? Who can explain
- 11. Known a
- 12. a> 1, b > 1, and a ≠ B, then the relationship between a and 178; B + AB and 178; and a and 178; + B and 178; is positive
- 13. We know Ab0, and a + B
- 14. Inquiry learning: known a < 0, - 1 < B < 0, try to compare the size of a, AB, AB2
- 15. a>1,-1
- 16. It is known that elements a and B can form AB2 and A2B It is known that elements a and B can form AB2 and A2B. The relative molecular mass of AB2 is 46 and that of A2B is 44. The relative atomic mass of a and B is calculated
- 17. The two elements represented by the atomic numbers of the following groups can form AB2 type ionic compounds () A. 6 and 8b. 11 and 13C. 11 and 16d. 12 and 17
- 18. The two elements represented by the atomic numbers of the following groups can form AB2 type ionic compounds () A. 6 and 8b. 11 and 13C. 11 and 16d. 12 and 17
- 19. For a number, the sum of its three digits is 20. And it is the largest three digits of all the multiples of 5 made up of its three digits. This number is ()
- 20. As shown in the figure, the mass of the shell of the spring scale is M0, and the mass of the spring and the hook is ignored. The mass of a heavy object suspended by the hook is m. now the external force F in a vertical direction is used to pull the spring scale to make it move upward uniformly and accelerate. The reading of the spring scale is: () A. Mg; B. [M / (M0 + m)] mg; C. [M0 / (M0 + m)] f; D. [M / (M0 + m)] f according to Newton's second law Overall study f = (M0 + m) a Research object f bullet = ma The result shows that the reading F of spring scale is [M / (M0 + m)] f, why f = (M0 + m) a instead of F = (M0 + m) a + (M0 + m) g