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Part II. Free Response: Graphing Calculator Permitted. Be sure to show all your work. Point values are given in ( ). 6. For each of following problems, use correct units when necessary and express your answers as a decimal rounded according to the rules discussed in class. Parts a and b refer to the following situation. +=Xx>Oz ( inx ) 2 The position of a particle moving along the x-axis for any time, t> 0, is given by s (t ) = sin(In(t) ) 2+ ecost z 2 4 3 + x = 7 9/4 e. The graph of this relation also possesses several points where a horizontal tangent line can be drawn. Find all the x-coordinates where these horizontal tangents lines exist. (2 points) between x= - 9/4 and?/4 the curve of the line gets closer to O, making it horizontal