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Multiple choice
Two orthonormal states psi1 and psi2 are combined as Psi = A(psi1 + psi2). Find the real positive normalization constant A that makes <Psi|Psi> = 1.
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1/2 = 0.5
sqrt(2) ≈ 1.414
1 (no rescaling needed)
1/sqrt(2) ≈ 0.707
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