y^-2=4/16

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Solution for y^-2=4/16 equation: 


D( y )

y = 0

y = 0

y = 0

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

y^-2 = 4/16 // - 4/16

y^-2-(4/16) = 0

y^-2-1/4 = 0

1*y^-2 = 1/4 // : 1

y^-2 = 1/4

-2 < 0

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

1 = 1/4*y^2 // : 1/4

4 = y^2

y^2 = 4 // ^ 1/2

abs(y) = 2

y = 2 or y = -2

y in { 2, -2 }

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