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RELATED INFORMATIONS

• 1. Among the nine integers from 1 to 9, ABC [A is not equal to B, not equal to C] indicates what number can make the equation hold C divided by B = a divided by 1 = B divided by a
• 2. Judge the position relation of the following points and give the proof. (1) a (1,2) B (- 3, - 4), C (2,3.5) (2) P (- 1,2) Q (0.5,0) r (5, - 6)
• 3. As shown in the figure, points a, B and C are on the same straight line, ∠ 1 = ∠ 2, ∠ 3 = ∠ D. try to judge the position relationship between BD and CF, and explain the reason
• 4. (1 / 2) the first question is to judge the position relation of a (- 2,12), B (1,3), C (4, - 6) and explain the reason (1 / 2) question 1 judge the position relation of a (- 2,12), B (1,3), C (4, - 6) and explain the reason The second problem is to find the three dimensions of the line 2x-5y-10 = 0 and the coordinate axis
• 5. Given three points a (1,3), B (- 2,0), C (12,4), try to judge whether these three points are on the same straight line, and explain the reason
• 6. Given a (- 1,1), B (1,3), C (2,5), try to judge the position relationship of a, B, C
• 7. The line a is parallel to B, B is parallel to C, D intersects with a at point m (2). Judge the position relationship between C and D, and explain the reason
• 8. It is known that, as shown in the figure, the straight lines a and B are cut by the straight line C, and ∠ 1 + ∠ 2 = 180 degrees. To prove that a is parallel to B, do you know how many methods to prove that a is parallel to B? To solve these problems, we must use the knowledge of grade two (including grade two)
• 9. As shown in the figure, a, B and C are on the same straight line, and ∠ 1 = 2, ∠ 3 = D. try to judge the position relationship between BD and CE, and explain the reason
• 10. As shown in the figure, AEB = NFP, M = C, judge the size relationship between a and P, and explain the reason
• 11. ABC three integers, satisfy a + B + C = 2001, and 1 Sum to get three numbers, and the original three numbers, a total of six.
• 12. If a three digit ABC satisfies ABC = a ^ 3 + B ^ 3 + C ^ 3, such as 153 = 1 ^ 3 + 5 ^ 3 + 3 ^ 3, it is called "wonderful number", and the sum of all numbers satisfying the condition is obtained
• 13. 30. Given a ^ 2 / 3 + B ^ 2 / 3 = 4, x = a + 3A ^ 1 / 3B ^ 2 / 3, y = B + 3A ^ 2 / 3B ^ 1 / 3, find (x + y) ^ 2 / 3 + (X-Y) ^ 2 / 3
• 14. Let 3A = 2, 3b = 5, let a and B denote the root of log (3) 30 Let 3A = 2, 3b = 5, try a and B to represent log3 √ 30
• 15. If 2A + 3B = 4 and 3a-b = - 5 can hold simultaneously, then a = B=
• 16. When a = 0.6, B = 0.2, find the value of 2.5 (3a + 3b-0.4)
• 17. Simplification: 5 (3a-b) - 4 (- A + 3b)
• 18. If A-B = 5, then 3A + 7 + 5b-6 (a + 13b)=______ ．
• 19. How to get 3A + 5 = 3B + 5 from a = B?
• 20. Try to explain how to get 3a-2 = 3b-2 from a = B