y=4y/2y-1

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Solution for y=4y/2y-1 equation: 


y in (-oo:+oo)

y = ((4*y)/2)*y-1 // - ((4*y)/2)*y-1

y-(((4*y)/2)*y)+1 = 0

y-2*y^2+1 = 0

y-2*y^2+1 = 0

DELTA = 1^2-(-2*1*4)

DELTA = 9

DELTA > 0

y = (9^(1/2)-1)/(-2*2) or y = (-9^(1/2)-1)/(-2*2)

y = -1/2 or y = 1

y in { -1/2, 1 }

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