To construct a progression at infinity as an expansion of function in the continuous interval, a good result was achieved.

给出了一种不含导数的函数展开方法，在函数的连续区间内构造一个无穷级数作为函数的展开式。

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Which gets me back to my original point: If you are doing a good job building and maintaining your following on Facebook, and you keep the interesting content flowing, the expansion of the Graph Search function should naturally start to present your business when the search keywords and phrases apply to what you sell.

FORBES: Facebook Graph Search: Big News For Small Business? Not Just Yet.