PHAS0009_24 25 1.3 Quiz 1 [0.25 hrs]

Consider the two-dimensional scalar field ϕ(r)=x2+2y2 \phi(\mathbf{r})=x^2+2y^2 . Determine the line y=ax+b y = a x+b that is normal (orthogonal) to the contour line ϕ(r)=3 \phi(\mathbf{r}) = 3 at the...