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Math Help - Casio fx-9860G graphing help

  1. #1
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    Casio fx-9860G graphing help

    hi,

    im learning linear/quadratic simulataneous equations and would like to use this calculator to graph the equations similar to the following to G-solv the points of intersection.

    x-y=0
    x^2+y^2=18

    has anyone any idea if it can be done on this calculator without rearranging the expressions.

    thanks

    attached: screen dumps of the calculator display for these functions (only half the circle is drawn) so using G-solv it just gives (3,3) and not (-3,-3).
    theres other menus for conics that allows (x-h)^2+(y-k)^2=r^2 and ax^2+ay^2+bx+cy+d=0 but you can't draw linear expressions here at least i dont think you can. (last 2 images)
    Attached Thumbnails Attached Thumbnails Casio fx-9860G graphing help-image1.bmp   Casio fx-9860G graphing help-image2.bmp   Casio fx-9860G graphing help-image3.bmp   Casio fx-9860G graphing help-image4.bmp   Casio fx-9860G graphing help-image5.bmp  

    Last edited by sammy28; April 28th 2009 at 02:56 PM.
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  2. #2
    Senior Member
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    Hi, No I think you'll have to compare the top semicircle to the other graph and then the bottom semicircle to the other graph. I don't think that you can find intersection points in conics mode.
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