1a)

The bending moment M for a beam at distance X metres from the support is given by the quadratic equation M = 2x squared - 13x + 15, using the quadratic formula calculate the values of X where the bending moment M=0.

1b)

Determine the turning point on the curve and find whether it is a maximum or a minimum.

1c)

Draw a graph of S=3T squared + 10T - 8 between T= -5 and T=3 and henc solve this equation 3T squared + 10T - 8 = 0.