Question: Show that any polynomial expression in X 1 ,,X p , say can be expressed as a homogeneous polynomial in X 0 ,X 1 ,,X
Show that any polynomial expression in X 1
,…,X p
, say can be expressed as a homogeneous polynomial in X 0
,X 1
,…,X p
Q4 =
p
∑
ijkl=0 bijklX iX jX kX l/4!, where X 0 = 1. Give expressions for the coefficients b in terms of the as. Find E(Q4) and var(Q4) and express the results in terms of the as.
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