(Solved): The shown beam is supported by fixed support at \( \mathrm{A} \), and two rollers at points \( \mat ...

The shown beam is supported by fixed support at \( \mathrm{A} \), and two rollers at points \( \mathrm{B} \) and \( \mathrm{C} \). Assume EI is constant for all beam members. Use the slope-deflection method to: a) The unknown joint rotation, \( \square \square_{3} \) ? b) The internal moment \( M_{A S} \) ? c) The vertical support reaction \( B_{y} \) ?