Determine if the function defines an inner product on R², where u = (u, v) = ₁V₁ satisfies (u, v) = (v, u) does not satisfy (u, v) = (v, u) satisfies (u, v + w) = (u, v) + (u, w) does not satisfy (u, v + w) = (u, v) + (u, w) satisfies c(u, v) = (cu, v) > U does not satisfy c(u, v) = (cu, v) satisfies (v, v) ≥ 0, and (v, v) = 0 if and only if v = 0 does not satisfy (v, v) ≥ 0, and (v, v) = 0 if and only if v = 0 X (U₁U₂) and v = (V₁, V₂). (Select all that apply.)

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