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2014-10-23 04:34:45 -0600 cjsh

why lim((x^2-x+1)^(1/2)+x,x=-oo,dir='below') is red error

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2014-10-06 13:28:42 -0600 H. Arponen

Boundary conditions at infinity with dsolve

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2012-07-18 04:00:09 -0600 Mathemage

Existence of a limit

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2011-05-13 08:22:09 -0600 Kelvin Li

arctan of infinity is undefined

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2011-02-14 14:05:25 -0600 kcrisman

arctan(tan(pi/2)) =pi/2 ?

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