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X=[0:4:.05]
Y=X^2-3*X+3+SIN(X*3)*RAN(X)*2
!
CLEAR
WINDOW 5
defaults
height = 6
SET
GRAPHBOX 0
%XNUMBERSHEIGHT height
%YNUMBERSHEIGHT height
@Draw_Title height 'original data'
GRAPH\AXESONLY X Y
GET
XMIN XMIN
XMAX XMAX
YMIN YMIN
YMAX YMAX
SCALES XMIN XMAX YMIN YMAX
SET PLOTSYMBOL -1
GRAPH\OVERLAY X Y
SET PLOTSYMBOL 0
!
WINDOW\inherit 6 5
@Draw_Title height '11 point quadratic formula'
FILTER\-RECURSIVE Y YF [-36;9;44;69;84;89;84;69;44;9;-36]
SCALES XMIN XMAX YMIN YMAX
GRAPH X YF/429
!
WINDOW\inherit 7 5
@Draw_Title height '11 point quartic formula'
FILTER\-RECURSIVE Y YF [18;-45;-10;60;120;143;120;60;-10;-45;18]
SCALES XMIN XMAX YMIN YMAX
GRAPH X YF/429
!
WINDOW\inherit 8 5
@Draw_Title height "15 point Spencer's formula"
FILTER\-RECURSIVE Y YF [-3;-6;-5;3;21;46;67;74;67;46;21;3;-5;-6;-3]
SCALES XMIN XMAX YMIN YMAX
GRAPH X YF/320
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