Using first principles, derive values for all support reactions in your indeterminate beam and frame in terms of P$.$ To do this, you are required to consider both equilibrium and compatibility. Derive all $$determinate$$ system deflection equations in terms of the variables

$$P$,$a$,$b$($and for the frame length $$a$$ only$),$ and $$L$.$ Do not use any numeric values for these variables at this stage.Figure $1$A$.$ Two span continous beam