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limit of sequence equal to limit of function |
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| Apr5-06, 11:29 AM | #1 |
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limit of sequence equal to limit of function
Suppose
lim (when n -> oo) of sup {f(x) / x belongs to (0, 1/n) } = L_1, and lim (when e -> 0+) of sup {f(x) / x belongs to (0, e) } = L_2. (e is simply epsilon). It seems pretty obvious, but it is truth that L_1 = L_2 ? Thanks for your help. |
| Apr5-06, 03:56 PM | #2 |
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Maybe this theorem works.
If: 1. Lim g(e) = L ( when e -> a+ ) 2. The sequence {a_n} -> "a"+ (but there is not a_n = a), Then the sequence { g(a_n) } -> L (when n -> oo). So in the case I stated previously I have these facts: 1. Let "g" be the function / g(e) = sup { f(x) / x belongs to (0,e) } 2. Lim g(e) = L ( when e -> 0+ ). 3. The sequence {1/n} -> 0+ So by the theorem I got { g(1/n) } -> L (when n -> oo), or in other words sup { f(x) / x belongs to (0,1/n) } -> L (when n -> oo). Now I would thank if someone can bless this. |
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