It is clear that Menabrea 's principle may be considered to be included in Castigliano's theorems; furthermore, Menabrea 's proofs were not satisfactory and were in fact repeatedly modified by him.
Ito ay malinaw na Menabrea 's batayan ay maaaring itinuturing na kasama sa Castigliano's theorems; tangi sa roon, Menabrea' s proofs ay hindi kasiya-siya at sa katunayan ay binago sa pamamagitan ng paulit-ulit sa kanya.