Re: dse question plz help

Posted by bhavya jain on May 24, 2014; 6:49am
URL: http://discussion-forum.276.s1.nabble.com/dse-question-plz-help-tp7590492p7590528.html

ans 2) d)
max A= area of a circle+area of square
A=pi(x/2)^2+(6-x)^2
taking the derivative & solving for x, we'll get
x=24/pi+4
multiplying by pi in both num & denom, we get x= 24pi/ 1+4pi, so option a)

Ans 1) c)
this concept u can find in hammond.
where g'(x)=1/f'(x), thus ( f^-1)'(8) = 1/6x^5+20x^3)=1/26 [where f(1)=8, so on substituting x=1, we'll get 1/26)