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Show that $ \frac {d}{dx} \arctan (\tan x) = sech 2x. $

$\operatorname{sech} 2 x$

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Campbell University

Oregon State University

Harvey Mudd College

University of Michigan - Ann Arbor

we know that seeking H squared of acts plus over one plus 10 h scored of X is one over sign hcgh Quarterbacks plus co sign Age scored of axe. We know this is equivalent to eat of the acts must eat of the night of acts over two squared plus each of the AKs plus E to the negative X over to swear us. This is a government too. Won over co sign h of two acts which simplifies to seek it h of two acts.