- (a) Since Since y = 18 − 2 · 2^2 = 10, P is at (2,10).
(b) Since Since Therefore(c) Let D = the object’s distance from the origin. Then(d) The object hits the x-axis when y = 18 − 2x^2 = 0, or x = 3. Since
(e) The length of the arc of y = 18 − 2x^2 for 0 ≤ x ≤ 3 is given by