[watermark]
1.【0,1】
0,1/n,2/n,3/n,,,n/n=1", n→∞,1/n=1˜,n/n=1~
2.【0,∞】
1) n=1,2,3,,, n→∞,
2) a+b√n, a,b已知, a=0,1,2,3,,,;b=0,1,2,3,,, n=0,1,2,3,,,
(1) a=0 ,f(x)=b√n
f(x) 0,b,b√2,b√3,,,
(2) b=0 f(x)=a,
f(x) 0,1,2,3,,,n
(3) a≠0,b≠0
f(x) a+b√n, n=0,1,2,3,,,
a,a+b,a+b√2,a+b√3,,, n=0,1,2,3,,,
哈哈! 已经超出俺探讨的范围了!![/watermark] |