Question: In the space Rn, do the following sets form linear spaces? x2 ,--()., = = ... | X1, X2, Xn ER, x1 + x2

In the space Rn, do the following sets form linear spaces? x2 ,--()., = = ... | X1, X2, Xn ER, x1 + x2 + + xn = 1 -- = = = .-{-- V3 = 1x1' X2 ..., | X1, X2,...,xn ER, x1 + x2 + + xn = 0 | X1, X2, : 2) ***) Xn ER, x13 = x2 = = , - -- xn

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