Move slider n, the number of subdivisions. The approximate length is shown in addition to the exact length using the arc length integral. [br][br]Move sliders a, b, c, and d to change the function. Move points A and B to change the interval.[br][br]Is the arc length approximation smaller or larger than the actual length? Is this true always, sometimes, never? Explain. [br][br]Would there be a function or functions for which the approximation is longer? Explain why or why not.