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posted by calyssa on Friday, March 5, 2010 at 4:11pm.

y=tan(2x+3.14/4)

looks like you mean y = tan(2x + pi/4) = (tan 2x + tan pi/4)/(1 - (tan 2x)(tan pi/4) = (tan 2x + 1)/(1 - tan 2x), since tan pi/4 = 1

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