alleryStart learning →$\displaystyle\int_1^e \ln x\, dx = ?$
- $0$
- $1$
- $e - 1$
- $e$
Show answer and solution
Correct answer: B. $1$
IBP: $[x\ln x - x]_1^e = (e - e) - (0 - 1) = 0 + 1 = 1$.
PUCET (Punjab) Log — practice questions
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