Homework Sourseg Then what has to be true of to hold Solutiong As Sumxi i
g) Then what has to be true of to hold ![g) Then what has to be true of to hold Solutiong. As [Sum(xi), i = 1 to n]^2 = [Sum(xi^2), i = 1 to n] + 2[DoubleSum(xi xj), i, j = 1 to n] = [Sum (xi^2), i =](/WebImages/24/g-then-what-has-to-be-true-of-to-hold-solutiong-as-sumxi-i-1061888-1761554859-0.webp "g) Then what has to be true of to hold Solutiong. As [Sum(xi), i = 1 to n]^2 = [Sum(xi^2), i = 1 to n] + 2[DoubleSum(xi xj), i, j = 1 to n] = [Sum (xi^2), i =")
Solution
g.
As [Sum(xi), i = 1 to n]^2 = [Sum(xi^2), i = 1 to n] + 2[DoubleSum(xi xj), i, j = 1 to n] = [Sum (xi^2), i = 1 to n]
Then, for these to be equal, the cross term must be 0,
2[DoubleSum(xi xj), i, j = 1 to n] = 0
[DoubleSum(xi xj), i, j = 1 to n] = 0 [ANSWER]
