_1^e 1 x ,dx is equals to - Vidyadip

MCQ

$\int_1^e {\frac{1}{x}\,dx} $ is equals to

A
$\infty $
B
$0$
✓
$1$
D
$\log (1 + e)$

✓

Answer

Correct option: C.

$1$

c
(c) $I = \int_1^e {\frac{1}{x}dx} $

$ = [\log x]_1^e = {\log _e}e - \log 1 = 1$.

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