Definite Integration Question 13

Question: Area bounded by the curve $ xy-3x-2y-10=0, $ x-axis and the lines $ x=3,x=4 $ is

[AI CBSE 1991]

Options:

A) $ 16\log 2-13 $

B) $ 16\log 2-3 $

C) $ 16\log 2+3 $

D) None of these

Show Answer

Answer:

Correct Answer: C

Solution:

Given curve is $ y(x-2)=3x+10\Rightarrow y=\frac{3x+10}{x-2} $

Required area is $ \int_3^{4}{ydx=\int_3^{4}{\frac{3x+10}{x-2}dx}} $

= $ [3x+16\log (x-2)]_3^{4}=3+16\log 2 $ sq. unit.