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Math Help - how to find equation?

  1. #1
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    how to find equation?

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  2. #2
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    Re: how to find equation?

    looks like a basic sine wave with amplitude of 175 and period of 50 ...

    V(x) = 175\sin\left(\frac{\pi x}{25}\right)

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  3. #3
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    Re: how to find equation?

    Quote Originally Posted by skeeter View Post
    looks like a basic sine wave with amplitude of 175 and period of 50 ...

    V(x) = 175\sin\left(\frac{\pi x}{25}\right)

    How did you get the period of pi/25??
    isn't the period 50?
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  4. #4
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    Re: how to find equation?

    did you not read the first line in my post?

    looks like a basic sine wave with amplitude of 175 and period of 50 ...
    fyi, \frac{\pi}{25} is not the period ...

    I recommend you research the role of the value B in the equation y = A\sin(Bx).
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  5. #5
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    Re: how to find equation?

    Quote Originally Posted by skeeter View Post
    did you not read the first line in my post?



    fyi, \frac{\pi}{25} is not the period ...

    I recommend you research the role of the value B in the equation y = A\sin(Bx).
    nvm got it, lol, 2pi/50 is B, correct?
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  6. #6
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    Re: how to find equation?

    Quote Originally Posted by ahmedb View Post
    nvm got it, lol, 2pi/50 is B, correct?
    that's what my post stated.
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  7. #7
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    Re: how to find equation?

    Quote Originally Posted by skeeter View Post
    that's what my post stated.
    yep, thanks alot!! any "like" or thanks button on this forum?
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  8. #8
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    Re: how to find equation?

    how can you convert it to cos?
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  9. #9
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    Re: how to find equation?

    Pretty simply. sin(u) = cos\left(\frac{\pi}{2} - u\right)
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