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Multiple choice
The energy eigenfunctions of the 1D infinite square well are psi_n(x) = sin(n pi x / L). For the ground state n = 1 with L = 1, what is the value of psi_1(x) at the midpoint x = 0.5?
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1/2 = 0.5
0
1
1/sqrt(2) ≈ 0.707
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