Let W be the set of all vectors [[a],[b],[c]]

such that a + b + c > 2.

Determine if W is a subspace of R^3 and check all correct answers below.**A. **W is a not vector space because it is not closed under the addition.**B. **W is not a vector space because it is not closed under scalar multiplication.**C. **W is not a vector space because it does not have a zero element.**D. **W is a vector space because it is the solution set of a homogeneous linear system.

The previous answers to this question have all been incorrect.

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1.W is not a vector space because it is not closed under scalar multiplication.**2. **W is not a vector space because it does not have a zero element.

u and v are in W such that

u(1,1,1) and v(0,2,0)

u+v in W

-1 u is not in W ( Not closed under scalar multiplication)

x(0,0,0) is vector

x is not in W.

because 0+0+0 not > 0

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