If'g" -f"g'l The formula k(t) = ( ( F) 2 + (9') 2) 3/2 expresses the curvature of the curve r(t) = (f(1),g(t)) , where f and g are twice differentiable and all the derivatives are taken with respect to t. Use this formula to find the curvature function of the following curve. r(t) = (t,412 ) The curvature function is k(1) =]