Problem $2(20$ pts$)$: Reactions for determinate structures. For the continuous

beam shown below, do the following:

a$)$ Calculate the determinacy of the structure $(2$ pts $)$

b$)$ Generate the free body diagram $(3$ pts $)$

c$)$ Solve for the reactions in each of them $(10$ pts $)$

d$)$ Perform at least one validation to demonstrate that your solution is correct $(5$ pts $)$