derivative of Moment Generating Function of CPP
poly (Poly) – poly representing MGF with key \((i,(n_1,m_1),...,(n_l,m_l))\) which stands for \((\lambda h)^{i}M^{(n_1)m_1}(s) ... M^{(n_l)m_l}(s)\).
poly with the same key-val.
Poly