Problem #$1(40$ points$)$: $($a$)$ Determine the reactions at the support. $($b$)$ Derive the shear and bending moment expressions in regions $ED,DC,CB($using the LHS as the FBD$)$ and region $AB($using the RHS as the FBD$).($c$)$ Draw the Shear and bending moment diagram for the beam and loading shown.