1/3,3/5,5/7,7/9,9/11……则第n个数是?如题,先谢过了!
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1/3,3/5,5/7,7/9,9/11……则第n个数是?如题,先谢过了!
1/3,3/5,5/7,7/9,9/11……则第n个数是?
如题,先谢过了!
1/3,3/5,5/7,7/9,9/11……则第n个数是?如题,先谢过了!
(2n-1)/(2n+1)
2n-1/2n+1
(2n-1)/(2n+1).
这题我会的..
(2n-1)/(2n+1)
1+3+5+7+9+11+.+99
1-3+5-7+9-11+13
1-3+5-7+9-11+.求救
1+3+5+7+9+11=?
1,3,5,7,9,11,15
计算:1-3 5-7 9-11
5 7 -5 3 9 -1 11 -3 1
计算:1/3*5+1/5*7+1/7*9+1/9*11+1/11*13
计算:2/3*5+1/5*7+1/7*9+1/9*11+1/11*13
简算:1/1*3+1/3*5+1/5*7+1/7*9+1/9*11
(1*3)/1+(3*5)/1+(5*7)/1+(7*9)/1+(9*11)/1
1/1*3+1/3*5+1/5*7+1/7*9+1/9*11
(1*3)/1+(3*5)/1+(5*7)/1+(7*9)/1+(9*11)/1
1,3,3,5,5,7,7,9,9,11,11 写出通项公式
1×3+3×5+5×7+7×9+9×11……99×101=?
1 -3 3 -5 5 -7 7 -9 9 -11……第1000个数是?
1/3,3/5,5/7,7/9,9/11……第n个数是多少
3/1×5/3×7/5×9/7×11/9×……×97/95×99/97