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Math Help - Zero Routine?

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    Zero Routine?

    I think I may just be confused on the "zero Routine" wording, but this problem reads "The height of the ball is given by the function -16t^2-32t+229 solve using the Zero routine on your TI-83 calculator." What exactly is the Zero Routine? Thanks!!!! and How would I apply it to this function. Thanks!!
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    Quote Originally Posted by Mathfailure View Post
    I think I may just be confused on the "zero Routine" wording, but this problem reads "The height of the ball is given by the function -16t^2-32t+229 solve using the Zero routine on your TI-83 calculator." What exactly is the Zero Routine? Thanks!!!! and How would I apply it to this function. Thanks!!
    Maybe it means finding the zeros.

    1)Graph y=-16x^2-32x+229
    2)Gaze upon the graph.
    3)Find the x-intercepts (place where it intersecpts the x-axis).
    4)Reject negative values.
    5)The remaining positive value is the zero.
    6)That is amount of time for it to come down.
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  3. #3
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    Quote Originally Posted by ThePerfectHacker View Post
    Maybe it means finding the zeros.

    1)Graph y=-16x^2-32x+229
    2)Gaze upon the graph.
    3)Find the x-intercepts (place where it intersecpts the x-axis).
    4)Reject negative values.
    5)The remaining positive value is the zero.
    6)That is amount of time for it to come down.


    Thanks!!! I think that is exactly what he means.
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  4. #4
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    Quote Originally Posted by Mathfailure View Post
    I think I may just be confused on the "zero Routine" wording, but this problem reads "The height of the ball is given by the function -16t^2-32t+229 solve using the Zero routine on your TI-83 calculator." What exactly is the Zero Routine? Thanks!!!! and How would I apply it to this function. Thanks!!
    Hello,

    1. write the term of the function at Y1=
    2. graph the function by pressing the GRAPH-button
    3. normally you will not see very much so press ZOOM-button and choose 0:ZoomFit
    4. press 2ND+TRACE (it's the command CALC)
    5. choose for 2:zero
    6. you will be prompted to give in a left and a right bound which you can do with the cursor. Be sure that the cursor crosses the x-axis
    7. type in a guess (with your problem -5 will do fine)
    8. you'll get the nearest zero

    EB

    PS: I used a TI84 but I believe (and hope) the syntax is similar to a TI83
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