Definite Integration Question 318

Question: The area enclosed between the curve $ y={\log _{e}}(x+e) $ and the co-ordinate axes is

[AIEEE 2005]

Options:

A) 3

B) 4

C) 1

D) 2

Show Answer

Answer:

Correct Answer: C

Solution:

Required area $ =\int _{1-e}^{0}{{\log _{e}}(x+e)\ dx} $

$ =\int_1^{e}{\logt\ dt=[t\log t-t]_1^{e}}=1\ sq.\ unit $ , (Put $ x+e=t $ ).