Ok this is going to be a little hard to explain since my "math english" isn't that good.

We know that the amount the two point support beam bends under the net force P of the triangular load is

0<=x<=L

where e and i are positive constants associated to the support beam's material and cross-section. In what point the bending on the support beam is largest when L=3 meters?

I hope you understand it . Thanks.