2/(14y^2)=18

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Solution for 2/(14y^2)=18 equation: 


D( y )

14*y^2 = 0

14*y^2 = 0

14*y^2 = 0

14*y^2 = 0 // : 14

y^2 = 0

y = 0

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

2/(14*y^2) = 18 // - 18

2/(14*y^2)-18 = 0

1/7*y^-2 = 18 // : 1/7

y^-2 = 126

-2 < 0

1/(y^2) = 126 // * y^2

1 = 126*y^2 // : 126

1/126 = y^2

y^2 = 1/126 // ^ 1/2

abs(y) = (1/126)^(1/2)

y = (1/126)^(1/2) or y = -(1/126)^(1/2)

y in { (1/126)^(1/2), -(1/126)^(1/2) }

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