nguyên hàm

L

linkinpark_lp

$
\ I = \int {\frac{{7x - 3}}{{2x + 5}}dx = \frac{7}{2}\int {\frac{{\left( {2x + 5} \right) - \frac{{41}}{7}}}{{2x + 5}}dx = \frac{7}{2}\int {dx - \frac{{41}}{2}\int {\frac{{dx}}{{2x + 5}} = } } } } \frac{7}{2}\int {dx} - \frac{{41}}{4}\int {\frac{{d\left( {2x + 5} \right)}}{{2x + 5}}} = \frac{{7x}}{2} - \frac{{41}}{4}\ln \left( {2x + 5} \right) + C\ $
 
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