Question: ] Consider a turning point at ? = ?? in WKB approximation, where ? > ?(?) for any ? < ?? and ? < ?(?)

] Consider a turning point at ? = ?? in WKB approximation, where ? > ?(?) for any ? < ?? and ? < ?(?) for any ? > ??. Which direction of the connection formula is reliable, i.e., from left to right or right to left

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