Find all values of x and y such that fx(x, y) = 0 and fy(x, y) = 0 simultaneously. f(x, y) = 15x3 - 3xy + 15y3.

Find all values of x and y such that fx(x, y) = 0 and fy(x, y) = 0 sim

1.	Find all values of x and y such that fx(x, y) = 0 and fy(x, y) = 0 simultaneously. f(x, y) = 15x3 - 3xy + 15y3.
Answer» Find all values of x and y such that f_x(x, y) = 0 and f_y(x, y) = 0 simultaneously. f(x, y) = 15x³- 3xy + 15y³. Solution: