Conjugate Beam M/EI: Explaining Diagrams & Theorem

[fonseh]

Homework Statement

I don't understand how the diagram of M/EI of conjugate beam drawn , can someone explain about it ? According to conjugate beam theorem ,

Homework Equations

The Attempt at a Solution

i know that the M/EI represent the w(x) , which is force per unit length of the beam . I don't understand why the author draw in in 2 directions ( upwards and downwards) ...

 

[fonseh]

BUMP...