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D( x )
0.11-x = 0
0.11-x = 0
0.11-x = 0
0.11-x = 0 // - 0.11
-x = -0.11 // * -1
x = 0.11
x in (-oo:0.11) U (0.11:+oo)
(x^2)/(0.11-x) = 10^4 // - 10^4
(x^2)/(0.11-x)-10^4 = 0
(x^2)/(0.11-x)-10000 = 0
(x^2)/(0.11-x)+(-10000*(0.11-x))/(0.11-x) = 0
x^2-10000*(0.11-x) = 0
x^2+10000*x-1100 = 0
x^2+10000*x-1100 = 0
x^2+10000*x-1100 = 0
DELTA = 10000^2-(-1100*1*4)
DELTA = 100004400
DELTA > 0
x = (100004400^(1/2)-10000)/(1*2) or x = (-100004400^(1/2)-10000)/(1*2)
x = (60*27779^(1/2)-10000)/2 or x = (-60*27779^(1/2)-10000)/2
(x-((-60*27779^(1/2)-10000)/2))*(x-((60*27779^(1/2)-10000)/2)) = 0
((x-((-60*27779^(1/2)-10000)/2))*(x-((60*27779^(1/2)-10000)/2)))/(0.11-x) = 0
((x-((-60*27779^(1/2)-10000)/2))*(x-((60*27779^(1/2)-10000)/2)))/(0.11-x) = 0 // * 0.11-x
(x-((-60*27779^(1/2)-10000)/2))*(x-((60*27779^(1/2)-10000)/2)) = 0
( x-((-60*27779^(1/2)-10000)/2) )
x-((-60*27779^(1/2)-10000)/2) = 0 // + (-60*27779^(1/2)-10000)/2
x = (-60*27779^(1/2)-10000)/2
( x-((60*27779^(1/2)-10000)/2) )
x-((60*27779^(1/2)-10000)/2) = 0 // + (60*27779^(1/2)-10000)/2
x = (60*27779^(1/2)-10000)/2
x in { (-60*27779^(1/2)-10000)/2, (60*27779^(1/2)-10000)/2 }
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