2(16/y)-y=-4

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Solution for 2(16/y)-y=-4 equation: 


D( y )

y = 0

y = 0

y = 0

y in (-oo:0) U (0:+oo)

2*(16/y)-y = -4 // + 4

2*(16/y)-y+4 = 0

32*y^-1-1*y^1+4*y^0 = 0

(4*y^1-1*y^2+32*y^0)/(y^1) = 0 // * y^2

y^1*(4*y^1-1*y^2+32*y^0) = 0

y^1

4*y-y^2+32 = 0

4*y-y^2+32 = 0

DELTA = 4^2-(-1*4*32)

DELTA = 144

DELTA > 0

y = (144^(1/2)-4)/(-1*2) or y = (-144^(1/2)-4)/(-1*2)

y = -4 or y = 8

y in { -4, 8} 

y in { -4, 8 }

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