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Posted by lyly2210 on 29-09-2013 - 16:58
Posted by lyly2210 on 16-09-2013 - 20:18
$\lim_{x->0}\left ( \frac{1}{(1+x)x}-\frac{ln(1+x)}{^{x^{2}}} \right )$
bài này em hoài vẫn ra -1 nhưng đáp án lại là -1/2. mong anh chị giải thích giùm em ạ. thanks