Let `x,y in R`, then find the maximum and minimum values of expression `(x^(2)+y^(2))/(x^(2)+xy+4y^(2))`.

given x,y varepsilon R,x^(2)+y^(2)>0 If the maximum and minimum value of the expression E=(x^(2)+y^(2))/(x^(2)+xy+y^(2)) are M and m respectively and A denotes the average value of M and m compute 2016A

If 2x+3y=4 , find the maximum or minimum value of xy.

The maximum value of the expression (3y^(2)-4xy)/(x^(2)+y^(2)) is

Find the maximum and minimum values of the function y=4x^3 -15x^2 +12x – 2

Find the minimum and maximum values of y in 4x^(2)+12xy+10y^(2)-4y+3=0

If y=1+2sin x+3cos^(2)x, find the maximum and minimum values of y AA x in R

Find the minimum and maximum value of f(x,y)=7x^(2)+4xy+3y^(2) subjected to x^(2) +y^(2) =1

Find the minimum & maximum values of (x+2)^(2)+(y-1)^(2), if (x-2)^(2)+(y+1)^(2)<=4

If x^(2)+y^(2)=1 , the minimum and maximum values of x+y are

The least value of expression x^(2)+2xy+2y^(2)+4y+7 is