x^(4)y^(4)-xy

Find the derivative of x^(4)+y^(4)-a^(2)xy=0 .

If x+y=3 and xy=2, then find x^(4)+y^(4)

If x-y=3 and xy=10, then find x^(4)+y^(4).

x^(4)y-xy^(4)

If x^(4) + y^(4) = 3xy, "then " (dy)/(dx) is equal to

Obtain dy/dx when : x^(4)+y^(4)+4xy-100 = 0

If x and y are two positive real numbers such that theirsum is one,then the maximum value of x^(4)y+xy^(4) is -

If x and y are two positive real numbers such that their sum is one,then the maximum value of x^(4)y+xy^(4) is-

Find the derivative of x^(4) + y^(4) - a^(2) xy = 0 w.r.to x