2/h^2=3.9

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Solution for 2/h^2=3.9 equation: 


D( h )

h^2 = 0

h^2 = 0

h^2 = 0

1*h^2 = 0 // : 1

h^2 = 0

h = 0

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

2/(h^2) = 3.9 // - 3.9

2/(h^2)-3.9 = 0

2*h^-2 = 3.9 // : 2

h^-2 = 1.95

-2 < 0

1/(h^2) = 1.95 // * h^2

1 = 1.95*h^2 // : 1.95

0.51282051 = h^2

h^2 = 0.51282051 // ^ 1/2

abs(h) = 0.51282051^(1/2)

h = 0.51282051^(1/2) or h = -0.51282051^(1/2)

h in { 0.51282051^(1/2), -0.51282051^(1/2) }

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