H
hoai_dung


tu so :x
mau so : ln x
can tu e den e^2???????????
$$I = \int_{e}^{e^2}\frac{xdx}{lnx}$$
mau so : ln x
can tu e den e^2???????????
$$I = \int_{e}^{e^2}\frac{xdx}{lnx}$$
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