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प्रश्न
The principal value branch of sec-1x is ______.
पर्याय
`[-pi/2, pi/2] - {0}`
`[0, pi] - {pi/2}`
(0, π)
`(- pi/2, pi/2)`
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उत्तर
The principal value branch of sec-1x is `bbunderline([0, pi] - {pi/2})`.
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