Calculus 3.11i - Derivative of Inverse Secant

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Differentiating the inverse secant function by means of implicit differentiation.
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best explanation yet for this, very in depth too thanks

thesage
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Thank you sir
But why the graph of sec inverse of x is not the reflection along the line x=y

tsnmurti
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so when is the x inside the absolute value will be negative?

hellokitkath