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|Robert G. de Boer|
|Exposition of a new presentation of the hyperbolic angle, together with hyperbolic functions sinh x and cosh x. The Cognitive Foundation section explains the rationale for this presentation order. The author writes: "The argument of hyperbolic functions sinh x and cosh x is given a clear development on this website. It is shown to be a simple matter of comparing some areas under the hyperbola y = 1/x. Teachers can use the lesson plan provided for the functions. Educational researchers will appreciate the discussion of cognitive foundation."|
|Math Topics:||Calculus (Single Variable)|
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