Define the shear and bending equations in terms of x for the following simply supported beam. Use the sign convention given on page 140 of the textbook.
a) Bending: M(x) = -∫V(x)dx, Shear: V(x) = -∫w(x)dx
b) Bending: M(x) = ∫V(x)dx, Shear: V(x) = ∫w(x)dx
c) Bending: M(x) = ∫V(x)dx, Shear: V(x) = -∫w(x)dx
d) Bending: M(x) = -∫V(x)dx, Shear: V(x) = ∫w(x)dx