Definite Integration Question 184

Question: The area bounded by the curves y = ln x, y = ln $ | x |,y=| lnx | $ and $ ,y=| ln| x | | $ is

Options:

A) 4 sq. units

B) 6 sq. units

C) 10 sq. units

D) None of these

Show Answer

Answer:

Correct Answer: A

Solution:

[a] First we draw each curve as separate graph Clearly the bounded area is as shown in the following figure. Required area $ =4\int\limits_0^{1}{(-\ell nx)dx} $

$ =-4[x\ell nx-x]_0^{1}=4 $ sq. units