Question $2)$ For the truss structure shown;

a$)$ Determine all member forces $($hand calculation$)$

b$)$ Verify your results with a structural analysis software.

The support at $A$ is roller, and at $E$ is pin.

$($Take $a=1,b=2,c=5,d=4,e=1,f=1)$ for example abft$=12ft,ek=1k$