Re: DSE 2012- Question 42-44, 48 and 55-56.

Posted by Sinistral on Jun 12, 2013; 11:20pm
URL: http://discussion-forum.276.s1.nabble.com/DSE-2012-Question-42-44-48-and-55-56-tp7580163p7582200.html

maahi wrote

48) we have to minimize d area of d rectangle area= xy =x(x^2 +1/x^2) . now minimise it .

the 2 ends of the diagonal of the rectangle are given (one at the origin and other on the curve). My doubt is: with a given diagonal we can make the area of the rectangle as small as possible, just by decreasing the angle between the diagonal and one of the sides of the rectangle. so it shouldn't matter at which point on the curve the other end of the diagonal lies. the minimum area can always be made zero.
what am I missing?