Problem $1.$ The figure shown below is associated with Problem $2-30$ in Structural Analysis, ${11}^{th}$ edition by Hibbeler. The beam is fabricated from two segments $AC$ and $CB,$ and it is supported by a roller at A and a fixed support at $B.$ There is a hinge $($or pin connection$)$ at $C.$ Use equilibrium equations to construct the influence line for the vertical reactions at A and $B$ and the reaction moment at $B.$ For your analyses, consider a unit load acting in the downward direction, and use the sign convention that an upward reaction force uarr is positive, and a reaction moment acting in the clockwise direction $U$ is positive. Identify the ordinate values on the $3$ diagrams at $A,B,$ and $C.$