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

196*y^2 = 0 // : 196

y^2 = 0

y = 0

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

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

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

1/98*y^-2 = 18 // : 1/98

y^-2 = 1764

-2 < 0

1/(y^2) = 1764 // * y^2

1 = 1764*y^2 // : 1764

1/1764 = y^2

y^2 = 1/1764 // ^ 1/2

abs(y) = 1/42

y = 1/42 or y = -1/42

y in { 1/42, -1/42 }

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