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Math Help - Need confirmation of 2 trig problems, please...

  1. #1
    Newbie JoanneMac's Avatar
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    Question Need confirmation of 2 trig problems, please...

    OK, I have 2 problems that I did that I need to know if they are correct. Here they are:

    1. Find the following graphs of y. Give the amplitude, its maximum and minimum and its period.

    y= 3sin1/3x Amp=3 period=2pi/1/3=2pi*3/1=6pi
    Max=c+a=0+3=3
    Min=c-a=0-3=-3 Since there's no c value I put 0...is that correct?

    2. Find Amp, Max and Min, period.
    y=tan2x
    Now, there's no amp, maxormin values, right? There's only its period which is: 2pi/2=pi

    I hope you can follow my problems and let me know if they are correct.

    Thanks!
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  2. #2
    Super Member
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    Scotland
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    Quote Originally Posted by JoanneMac View Post
    OK, I have 2 problems that I did that I need to know if they are correct. Here they are:

    1. Find the following graphs of y. Give the amplitude, its maximum and minimum and its period.

    y= 3sin1/3x Amp=3 period=2pi/1/3=2pi*3/1=6pi
    Max=c+a=0+3=3
    Min=c-a=0-3=-3 Since there's no c value I put 0...is that correct?

    2. Find Amp, Max and Min, period.
    y=tan2x
    Now, there's no amp, maxormin values, right? There's only its period which is: 2pi/2=pi

    I hope you can follow my problems and let me know if they are correct.

    Thanks!
    All correct except the period of tan(2x). The period of tan(x) is usually  \pi , so the the period of tan(2x) will be half that.

    (Only cos(x) and sin(x) have period 2\pi... [tex]tan(x) has period \pi!)
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