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Home  >>  JEEMAIN and AIPMT  >>  Mathematics  >>  Class12  >>  Integral Calculus
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Integrate: $\int \limits_{1/e}^e | \log_e x| dx $

\[\begin {array} {1 1} (a)\;\frac{1}{e} \\ (b)\;\frac{2}{e} \\ (c)\;\frac{e}{2} \\ (d)\;\frac{4}{e} \end {array}\]
Can you answer this question?
 
 

1 Answer

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$\log _e x=0$
at $x=1, \log _e n=0$
if it is negative x < 1
if it is positive x > 1
$\int \limits_{4e}^1 -(\log _e x)+\int \limits_1 ^e \log _e x dx$
=> $\large\frac{2}{e}$
Hence b is the correct answer.
answered Dec 12, 2013 by meena.p
 

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