Considerthe function f(x,y) = 2 . y2 4 . x2 ' y 12- y + 156 - x2 1 Find the locations of and stationary points. Mention points in any order. If you think that there are fewer than four points, put the last ones as x = 0, y = 0. You can assume that there is no stationary point at the origin. First stationary point x = Second stationary point x = Third stationary point x =