Conjugate beam: loading with variable stiffness M/EI

[musicmar]

Homework Statement

See problem number 2 as attached.

The Attempt at a Solution

I found the reactions and shear and moment diagrams for the original beam. I also drew the conjugate beam and loaded it with M/EI.

My only question for this problem is what the 4EI and EI under the beam in the diagram mean. Presumably, the problem is implying that that there are two different materials. Do I just load the first segment with M/4EI?

Thank you.

 

[musicmar]

Also, I assume that "under the concentrated load" means at point c, right?