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HELP

function f(x) { y =  -6.9e-05*x*x*x + 0.00482*x*x + -0.115*x + 0.998; return y }

aX = 0; bX = 30; aY = 0; bY = 1.1
Dx = 5; Dy = 0.1

Q1x=[0,    1,    2,    4,    6,   8,  10,   15,   20,   30]
Q1y=[1,0.886,0.785,0.608,0.465,0.35,0.26,0.115,0.069,0.012]

AX=BX=AY=BY=""
AAX=aX; BBX=bX; AAY=aY; BBY=bY