Recent content by mrchartreuse

Sigh, if only it were that easy. We are supposed to do them all by hand...

The problem is: . Let f : R^2 → R be given by f(x,y)=y^2 +2x^2 −x^4. Sketch the contour diagram of f by drawing the contours f = −2, −1, 0, 1 , 1, 2. I have started with the f = -1 line and managed to get it into a form resembling a hyperbola: 1 = (x^2-1)^2/2 - y^2/2 Is this the right sort of...