Question: Show that the first-order energy corrections computed in Example 7.3 (Equation 7.34) agree with an expansion of the exact solution (Equation 7.21) to first order

Show that the first-order energy corrections computed in Example 7.3 (Equation 7.34) agree with an expansion of the exact solution (Equation 7.21) to first order in ϵ.

Emn = (m + 2) + (x + 2) hore. m+ The

w + n+ (7.21)

Emn = (m + 2) + (x + 2) hore. m+ The w + n+ (7.21)

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