Hi, I'm an algebra student and I'd like to ask for help with an example, because I don't know how to do it at all. I will be grateful for any advice and help.
Let F: A ->B be a right exact functor between abelian categories. Prove that each left derived functor L_i F: A -> B is additive.
Let F: A ->B be a right exact functor between abelian categories. Prove that each left derived functor L_i F: A -> B is additive.