Question: Starting with the exact expression given by Eq. (5.5), show that Eq. (6.46) results, rather than Eq. (5.8), when the approximations for 0 and

Starting with the exact expression given by Eq. (5.5), show that Eq. (6.46) results, rather than Eq. (5.8), when the approximations for ℓand ℓare improved a bit.

1 ( n2Si R l; NSo ) (5.5) li lo

1 ( n2Si R l; NSo ) (5.5) li lo

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