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D( x )
0.002-x = 0
0.002-x = 0
0.002-x = 0
0.002-x = 0 // - 0.002
-x = -0.002 // * -1
x = 0.002
x in (-oo:0.002) U (0.002:+oo)
0.00002483 = (x^2)/(0.002-x) // - (x^2)/(0.002-x)
0.00002483-((x^2)/(0.002-x)) = 0
(-1*x^2)/(0.002-x)+0.00002483 = 0
(-1*x^2)/(0.002-x)+(0.00002483*(0.002-x))/(0.002-x) = 0
0.00002483*(0.002-x)-1*x^2 = 0
0.00000004966-x^2-0.00002483*x = 0
0.00000004966-x^2-0.00002483*x = 0
0.00000004966-x^2-0.00002483*x = 0
DELTA = (-0.00002483)^2-(-1*0.00000004966*4)
DELTA = 0.00000019864
DELTA > 0
x = (0.00000019864^(1/2)+0.00002483)/(-1*2) or x = (0.00002483-0.00000019864^(1/2))/(-1*2)
x = (0.00000019864^(1/2)+0.00002483)/(-2) or x = (0.00002483-0.00000019864^(1/2))/(-2)
(x-((0.00000019864^(1/2)+0.00002483)/(-2)))*(x-((0.00002483-0.00000019864^(1/2))/(-2))) = 0
((x-((0.00000019864^(1/2)+0.00002483)/(-2)))*(x-((0.00002483-0.00000019864^(1/2))/(-2))))/(0.002-x) = 0
((x-((0.00000019864^(1/2)+0.00002483)/(-2)))*(x-((0.00002483-0.00000019864^(1/2))/(-2))))/(0.002-x) = 0 // * 0.002-x
(x-((0.00000019864^(1/2)+0.00002483)/(-2)))*(x-((0.00002483-0.00000019864^(1/2))/(-2))) = 0
( x-((0.00000019864^(1/2)+0.00002483)/(-2)) )
x-((0.00000019864^(1/2)+0.00002483)/(-2)) = 0 // + (0.00000019864^(1/2)+0.00002483)/(-2)
x = (0.00000019864^(1/2)+0.00002483)/(-2)
( x-((0.00002483-0.00000019864^(1/2))/(-2)) )
x-((0.00002483-0.00000019864^(1/2))/(-2)) = 0 // + (0.00002483-0.00000019864^(1/2))/(-2)
x = (0.00002483-0.00000019864^(1/2))/(-2)
x in { (0.00000019864^(1/2)+0.00002483)/(-2), (0.00002483-0.00000019864^(1/2))/(-2) }
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