b 5. The curve with equation y = ax +- has a stationary point at (2, 7). Find: 2x -1 (a) the values of a and b. (b) the coordinates of the other stationary point(s). 6. Find the x-coordinates, in terms of n, of the stationary points of the curve with equation y = (2x-1)" (x+2), where n is a natural number