I need help on 18 and 19 please and thank you 

Guest Apr 16, 2017

18.  tan ( x - pi/4)


This is the graph of the tangent shifted to the right by pi/4 units

The normal tangent graph would have an asymptote at pi/2......so this graph will have an asymptote, for example, at

x = (pi/4 + pi/2)   =  3pi/4


See the graph here : https://www.desmos.com/calculator/ufvhykjqvu



19.  f(x) = 3cos(2pi *x)


The period, P, can be found as


P(2pi) = 2pi    →  P  = 1 radian


Here's the graph :   https://www.desmos.com/calculator/a4od0m3gco




cool cool cool

CPhill  Apr 16, 2017

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