Just challenge your skills

Calculus Level 5

A curve passing through ( 1 , 2 ) (1,2) has its slope at any point ( x , y ) (x,y) equal to 2 y 2 \frac{2}{y-2} . Find the area of the region bounded by the curve and the line 2 x y 4 = 0 2x-y-4=0 .


The answer is 9.

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

1 solution

Maria Kozlowska
Jan 8, 2016

y = 2 / ( y 2 ) y y 2 y = 2 y'=2/(y-2) \Rightarrow y'y -2y'=2 Integrating on both sides gives: y 2 / 2 2 y = 2 x + C y^2/2-2y=2x+C

I am going to switch x and y to get simple parabola

y = 1 / 4 x ² x + 2 y=1 / 4 x² - x + 2

Line equation becomes:

y = x / 2 + 2 y=x / 2 + 2

Integrating both from 0 to 6 gives 21-12=9

Hope it helps.

Great nice and elegant approach..............thanks for providing solution...NICE SOLUTION upvoted

Mohit Gupta - 5 years, 5 months ago

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...