ψ=2asin(πnxa)\psi=\sqrt\frac{2}{a}sin(\frac{\pi nx}{a})ψ=a2sin(aπnx)
n=2n=2n=2
W=∫3a85a8∣ψ(x)∣2dxW=\int_{\frac{3a}{8}}^{\frac{5a}{8}} |\psi(x)|^2 dxW=∫83a85a∣ψ(x)∣2dx
W=2a∫3a85a8sin2(2πxa)dx=0.09W=\frac{2}{a}\int_{\frac{3a}{8}}^{\frac{5a}{8}} sin^2 (\frac{2\pi x}{a})dx = 0.09W=a2∫83a85asin2(a2πx)dx=0.09
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