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Math Help - Graph of Trigo Func.

  1. #1
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    Graph of Trigo Func.

    Can someone help me.. please
    What's the graph of:
    1. -cos2x
    2. 2cos(3x+pi/2)

    thanks..
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  2. #2
    A Plied Mathematician
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    CT, USA
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    Re: Graph of Trigo Func.

    WolframAlpha to the rescue. Although, these are straight-forward enough plots that you should be able to do them without technology. You need to know how scaling affects a function, both in the independent and dependent variable. You also need to know how an offset affects a function, both in the independent and dependent variable.
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