(a) Let x(s) = (x(s), y(s)) be a plane curve parametrized by arclength. Show that the cu...

(a) Let x(s) = (x(s), y(s)) be a plane curve parametrized by arclength. Show that the curvature is given by the formula

(b) Show that is parametrized by arclength, and compute its

curvature.