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Question: among the following vectors select the ones which have length...

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Among the following vectors select the ones which have length 1 and are perpendicular to the hyperplane

2x+y−z = 7

Select one or more:

a. (0,1,0)
b. (2,1,−1)
c. (1/√6)*(2,1,−1)

d. (1/√6)*(−2,−1,1)

e. (1/√6)*(2,1,1)

f. (−2,−1,1)

g. (1/3)*(1,1,1)

h. The scalar multiple of (2,1,−1) by (1/√6) or by (−1/√6)

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