Please help me answer this question.

Show, by calculating how often each derivative occurs, that the Taylor polynomial of degree m - 1 can be written in the form (Dil . . . De f) (a) Sp Ip $1! . . . Sp- Here, the sum extends over all ordered p-tuples ($1, . .., Sp) such that each s; is a non-negative integer, and s1 + . . . Spam -1.Let f e 0"")(U) where U is an open subset of RP. Fix a e U. suppose that B(a;5) E U, and suppose a: E R\" with \"I" <. :5. dene h : u for all t e r such that a u. that. this certainly includes by the choice of>