$I=\int_{ln\left ( 3 \right )}^{ln\left ( 8 \right )}\frac{1-x}{\sqrt{e^{2x}+e^{x}}}dx$
Tính tích phân : $I=\int_{ln\left ( 3 \right )}^{ln\left ( 8 \right )}\frac{1-x}{\sqrt{e^{2x}+e^{x}}}dx$
Started By hoaadc08, 08-04-2014 - 18:37
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