3=x^(-1/2)

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Solution for 3=x^(-1/2) equation: 


D( x )

x < 0

x = 0

x < 0

x = 0

x = 0

x in (0:+oo)

3 = x^(-1/2) // - x^(-1/2)

3-x^(-1/2) = 0

-1*x^(-1/2) = -3 // : -1

x^(-1/2) = 3

-1/2 < 0

1/(x^(1/2)) = 3 // * x^(1/2)

1 = 3*x^(1/2) // : 3

1/3 = x^(1/2)

x^(1/2) = 1/3 // ^ 2

x = 1/9

x = 1/9

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