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D( x )
8*x^2-(6*x)+1 = 0
8*x^2-(6*x)+1 = 0
8*x^2-(6*x)+1 = 0
8*x^2-6*x+1 = 0
8*x^2-6*x+1 = 0
DELTA = (-6)^2-(1*4*8)
DELTA = 4
DELTA > 0
x = (4^(1/2)+6)/(2*8) or x = (6-4^(1/2))/(2*8)
x = 1/2 or x = 1/4
x in (-oo:1/4) U (1/4:1/2) U (1/2:+oo)
(6*x^2-(5*x)+1)/(8*x^2-(6*x)+1) = 0
(6*x^2-5*x+1)/(8*x^2-6*x+1) = 0
6*x^2-5*x+1 = 0
6*x^2-5*x+1 = 0
DELTA = (-5)^2-(1*4*6)
DELTA = 1
DELTA > 0
x = (1^(1/2)+5)/(2*6) or x = (5-1^(1/2))/(2*6)
x = 1/2 or x = 1/3
(x-1/3)*(x-1/2) = 0
8*x^2-6*x+1 = 0
8*x^2-6*x+1 = 0
DELTA = (-6)^2-(1*4*8)
DELTA = 4
DELTA > 0
x = (4^(1/2)+6)/(2*8) or x = (6-4^(1/2))/(2*8)
x = 1/2 or x = 1/4
(x-1/4)*(x-1/2) = 0
((x-1/3)*(x-1/2))/((x-1/4)*(x-1/2)) = 0
( x-1/2 )
x-1/2 = 0 // + 1/2
x = 1/2
( x-1/3 )
x-1/3 = 0 // + 1/3
x = 1/3
x in { 1/2}
x = 1/3
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