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How do you graph #-2 tan^(-1) (x/2)#?

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Jul 27, 2018

#y = - 2 tan ( x/2 ), x/2 ne ( 2 k + 1 ) pi/2#

#rArr# asymptotic# x ne ( 2 k + 1 ) pi, #

#k = 0, +-1, +-2, +-3, ...#

Period# = pi/(1/2) = 2pi#

See graph:
graph{(y+2 tan ( x/2 ))(x-pi +.01y)(x+pi +.01y)=0[-20 20 -10 10]}

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