![](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>)
5/7,5/13,17/63,13/63…… , find the law, find the general term formula
First of all, consider the reciprocal of all numbers 7 / 5, 13 / 5, 63 / 17, 63 / 13. Note that the front is the molecule, and then write these numbers in fractional form to get 1 + 2 / 5, 2 + 3 / 5, 3 + 12 / 17, 4 + 11 / 13. Obviously, the law of 1,2,3,4 has been found. Now consider the law of true fraction 2 / 5, 3 / 5, 12 / 17, 11 / 13
RELATED INFORMATIONS
- 1. -3 / 7,2 / 5, - 5 / 13,3 / 8, - 7 / 19,4 / 11 write the general formula
- 2. What is the law of the calculation of 1 + 3 + 6 + 10 + 15 + 21 + 28?
- 3. 1, 3, 6, 10, 15, 21, 28, 36, 45
- 4. Calculation: 13 + 16 + 110 + 115 + 121 + 128 + 136 + 145=______ ．
- 5. The rule of 0 1 3 6 10 15 21 28 36 (expressed by n),,,,, you prawns are bubbling ,,,,,, n denote
- 6. What are the rules of 3, 6, 10, 15 and 21?
- 7. Mathematical solution; write numbers according to the law; 0,1,3,5,8,21,55, (--, --, --, --,)
- 8. Observe the number of the following column, 1.3.6.10.15.21... According to this rule, what is its number in 2004
- 9. Observe the number in the following column, 1,3,6,10,15,21. According to this rule, its number 2004 is
- 10. Look at the numbers 1, 3, 6, 10, 15, 21, 28, 1 According to the law, what is the number from one to the hundredth? What is the number in 2009?
- 11. 1,3,6,10,15,21,…… Who can tell me the general formula? It can be described in words
- 12. The general formula of 0 1 3 6 10 15 21 28
- 13. Finding the general term formula of 6,10,15,21
- 14. The general formula: 2 / 1, 3 / 2, 5 / 3, 8 / 5, 13 / 8, 21 / 13
- 15. Find "2 / 1,3 / 2,5 / 3,8 / 5,13 / 8,21 / 13..." The general term formula of
- 16. 3,7,13,21,31
- 17. What is the general formula of 1,3,7,13,21 What is the general formula of 1,3,7,13,21,31
- 18. What are the general formulas of 1,2,5,10,17,26 and 1,3,7,13,21?
- 19. 2 / 3, - 1,10 / 7, - 17 / 9,26 / 11?
- 20. 1,2,5,10,17 I know the answer!