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I need help on 18 and 19 please and thank you 

 Apr 16, 2017
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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

 Apr 16, 2017

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