The metal bar of length L in the figure has one end attached at the point P to a P circle of radius a. Point Q at the other L a end can slide back and forth along the -axis. Assume that L > a. Q (a) Find x as a function of 0. T = VL2 a2 + a2 cos2(0) + 2 cos(0) (b) Assume lengths are in centimeters and the angular velocity de dt is 18 radians/second counterclockwise. Find the velocity at which the point Q is moving when (i) 0 = (ii) 0 = 4 First, find dx de dx de Fill in the three blanks in the formula with either dx, dt, or dedx First, find dx de Fill in the three blanks in the formula with either dx, dt, or de in order to apply the chain rule to help solve this problem. Choose one v /do. de Choose one Choose one Using the given information and your answers above, write a dx formula for in terms of 0. dt da dt Finally, we have the velocity, v, of the point, in cm/sec: (i) At 0 = v = (ii) At 0 = 4 U =On what interval is In (x2 + 9) concave up? HI EX