1/k^2=0.25

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Solution for 1/k^2=0.25 equation: 


D( k )

k^2 = 0

k^2 = 0

k^2 = 0

1*k^2 = 0 // : 1

k^2 = 0

k = 0

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

1/(k^2) = 0.25 // - 0.25

1/(k^2)-0.25 = 0

1*k^-2 = 0.25 // : 1

k^-2 = 0.25

-2 < 0

1/(k^2) = 0.25 // * k^2

1 = 0.25*k^2 // : 0.25

4 = k^2

k^2 = 4 // ^ 1/2

abs(k) = 2

k = 2 or k = -2

k in { 2, -2 }

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