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

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

Find the maximum and minimum values of the function y=4x^3-3x^2-6x+1

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 and maximum value of function Z=3x+4y subject to constraints are x>=0,y>=0,x+2y<=10 and 2x+y<=14

If x – 2y = 4, the minimum value of xy is

If x-2y=4 the minimum value of xy is

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

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