Derivative of sech
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Revision as of 05:45, 20 March 2015 by Tom (talk | contribs) (Created page with "<div class="toccolours mw-collapsible mw-collapsed" style="width:800px"> <strong>Proposition:</strong> $\dfrac{d}{dx}$$\mathrm{sech}$$(x)=-\mat...")
Proposition: $\dfrac{d}{dx}$$\mathrm{sech}$$(x)=-\mathrm{sech}(x)$$\tanh$$(x)$
Proof: █
