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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
0.02*(1-x)+0.04*((0.15-0.06)/x) = 0.08*(1-x)+0.02*((0.14-0.06)/x) // - 0.08*(1-x)+0.02*((0.14-0.06)/x)
0.02*(1-x)-(0.08*(1-x))+0.04*((0.15-0.06)/x)-(0.02*((0.14-0.06)/x)) = 0
0.02*(1-x)-0.08*(1-x)+0.04*((0.15-0.06)/x)-0.02*(0.14-0.06)*x^-1 = 0
0.02*(1-x)-0.08*(1-x)+0.0036/x-0.0016/x = 0
(0.02*x*(1-x))/x+(-0.08*x*(1-x))/x+0.0036/x-0.0016/x = 0
0.02*x*(1-x)-0.08*x*(1-x)-0.0016+0.0036 = 0
0.06*x^2-0.06*x-0.0016+0.0036 = 0
0.06*x^2-0.06*x+0.002 = 0
0.06*x^2-0.06*x+0.002 = 0
0.06*x^2-0.06*x+0.002 = 0
DELTA = (-0.06)^2-(0.002*0.06*4)
DELTA = 0.06^2-0.00048
DELTA = 0.00312
DELTA > 0
x = ((0.06^2-0.00048)^(1/2)+0.06)/(0.06*2) or x = (0.06-(0.06^2-0.00048)^(1/2))/(0.06*2)
x = 8.33333333*((0.06^2-0.00048)^(1/2)+0.06) or x = 8.33333333*(0.06-(0.06^2-0.00048)^(1/2))
(x-8.33333333*(0.06-(0.06^2-0.00048)^(1/2)))*(x-8.33333333*((0.06^2-0.00048)^(1/2)+0.06)) = 0
((x-8.33333333*(0.06-(0.06^2-0.00048)^(1/2)))*(x-8.33333333*((0.06^2-0.00048)^(1/2)+0.06)))/x = 0
((x-8.33333333*(0.06-(0.06^2-0.00048)^(1/2)))*(x-8.33333333*((0.06^2-0.00048)^(1/2)+0.06)))/x = 0 // * x
(x-8.33333333*(0.06-(0.06^2-0.00048)^(1/2)))*(x-8.33333333*((0.06^2-0.00048)^(1/2)+0.06)) = 0
( x-8.33333333*((0.06^2-0.00048)^(1/2)+0.06) )
x-8.33333333*((0.06^2-0.00048)^(1/2)+0.06) = 0 // + -8.33333333*((0.06^2-0.00048)^(1/2)+0.06)
x = -(-8.33333333*((0.06^2-0.00048)^(1/2)+0.06))
x = 8.33333333*((0.06^2-0.00048)^(1/2)+0.06)
( x-8.33333333*(0.06-(0.06^2-0.00048)^(1/2)) )
x-8.33333333*(0.06-(0.06^2-0.00048)^(1/2)) = 0 // + -8.33333333*(0.06-(0.06^2-0.00048)^(1/2))
x = -(-8.33333333*(0.06-(0.06^2-0.00048)^(1/2)))
x = 8.33333333*(0.06-(0.06^2-0.00048)^(1/2))
x in { 8.33333333*((0.06^2-0.00048)^(1/2)+0.06), 8.33333333*(0.06-(0.06^2-0.00048)^(1/2)) }
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