Y$.20$ Problem $1(50$ points$).$ For the beam shown below with a constant EI$,$ answer the questions with the given $x-$axis using Integration Method:

$($a$)[10$ points$]$ List rour doundary conumuns ur uic vcaun.

$($b$)[10$ points$]$ Determine the equation of the distributed load, $(x).$

$($c$)$ points$]$ Determine the equation of the bending moment, $M(x).$

$($d$)$ points$]$ Determine the equation of the elastic curve, $y(x).$

$($e$)$ points$]$ Determine the slope angle at point $B,{}_B.$

$6R_B+10kN*m+20kN*m=0$

$R_B=-5N(l)$

$+uarr{F}_y=0$;$R_A+R_B-0=0$

$R_A=5EN()$