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- UID
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- 注册时间
- 2011-7-11
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- 2014-7-31
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joec4256 Wrote:
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> Hi Thx for the info. I was hoping it wasn't that
> simple. Can you give an example where the
> variances are not constant? (This is from book one
> on page 285.)
Stock prices for starters! |
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发表于 2011-7-11 19:03
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