The light cable is suspended from two points a distance L apart and on the same horizontal...

The light cable is suspended from two points a distance L apart and on the same horizontal line. If the load per unit of horizontal distance supported by the cable varies from w0 at the center to w1 at the ends in accordance with the relation w = a + bx2, derive the equation for the sag h of the cable in terms of the midspan tension T0.