To start the animation, click the 'play' icon on the t-value slider (2[sup]nd [/sup]row).[br][br]Vector v = the derivative vector in standard position (initial point at the origin)[br]Vector v[sub]u'[/sub][sub] [/sub]= the derivative vector starting at the point on the graph to which it is related[br]Vector v[sub]u[/sub] = the output vector to our vector valued function[br]