6. Prove or give (a) A = {(t, t)t = R} is a subspace of R....
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6. Prove or give (a) A₁ = {(t, t³)t = R} is a subspace of R². counterexample for each of the following. 6. Prove or give (a) A₁ = {(t, t³)t = R} is a subspace of R². counterexample for each of the following.
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