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Math Help - Need help with a graph!!! please help

  1. #1
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    Need help with a graph!!! please help

    sketch the graphs of these relationships. In your analysis include reference to period, aymptotes, vertical and horizontail shifts, and the value of "a"



    a) y = tan(x - pi/4)


    b) y = 2tan(2x) + 1


    thanks
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  2. #2
    Senior Member
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    Re: Need help with a graph!!! please help

    This is about transforming the graph of y=tanx. a. Replacing x by x-pi/4 translates the graph pi/4 in the positive direction.
    b. replacing x by 2x produces 'stretch parallel to the x axis with scale factor 1/2. Then multiplying by 2 produces stretch scale factor 2 parallel to the y axis. Finally the +1 produces a translation +1 in the y direction.
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