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Multiple choice
An infinite-square-well ground state gives probability density ψ(x)2=2sin2(πx)|\psi(x)|^2 = 2\sin^2(\pi x) on 0x10 \le x \le 1. What is the probability of finding the particle in the interval 0x1/30 \le x \le 1/3? Use 2sin2(πx)dx=xsin(2πx)/(2π)\int 2\sin^2(\pi x) \, dx = x - \sin(2\pi x)/(2\pi).