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Math Help - [SOLVED] Making a picture of a pumpkin on a TI-83

  1. #1
    gnads
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    [SOLVED] Making a picture of a pumpkin on a TI-83

    I need to use piecewise functions, and I have no idea how to do this.

    So far I have this for the round head of the pumpkin:

    Y1= squareroot(40-Xsquared)
    Y2= -squareroot(40-Xsquared)

    window is just standard.


    I need triangles for eyes and a nose. I need to know how to make short lines. Can anyone steer me in the right direction for formulas for this?

    Thanks.
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  2. #2
    Super Member
    earboth's Avatar
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    Quote Originally Posted by gnads View Post
    I need to use piecewise functions, and I have no idea how to do this.

    So far I have this for the round head of the pumpkin:

    Y1= squareroot(40-Xsquared)
    Y2= -squareroot(40-Xsquared)

    window is just standard.


    I need triangles for eyes and a nose. I need to know how to make short lines. Can anyone steer me in the right direction for formulas for this?

    Thanks.
    Hello,

    with a TI83 it is possible to draw pieces of a graphs by adding the terms of functions including their domains:

    y1(x)=(4)\underbrace{\underbrace{(2<x)}_{\text{low  er bound}}\underbrace{(x<4)}_{\text{upper bound}}}_{\text{domain}} and
    y2(x)=(-.5*x+5)(2<x)(x<3)+(.5*x+2)(3<x)(x<4)

    will give one eye of your pumpkin. You can only use the "<"-sign to determine the domain. You find this sign via catalog(=2ND 0) and going up until you reach the "<"-sign or 2ND MATH (="TEST") #5
    Last edited by earboth; October 23rd 2007 at 09:07 PM.
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