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Domain of $$\sec^{-1}x$$
## Formula
$$x\in(-\infty,-1]\cup[1,\infty)$$
## Usage
- Used to check whether a real inverse secant expression is defined.
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Domain of $$\sec^{-1}x$$
## Formula
$$x\in(-\infty,-1]\cup[1,\infty)$$
## Usage
- Used to check whether a real inverse secant expression is defined.
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