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Hyperbolic trig graphs

Geometry Level 2

Which of the following hyperbolic trignometric graphs is "approximated" best by \(y = \dfrac{1}{x} \) ?

\[ y=\text{csch}\, x\] \[y=\tanh x\] \[ y=\text{sech}\, x\] \[ y=\sinh x\] \[y=\coth x\] \[ y=\cosh x\]

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by Hobart Pao

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