3x^(-1/2)=27

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Solution for 3x^(-1/2)=27 equation: 


D( x )

x < 0

x = 0

x < 0

x = 0

x = 0

x in (0:+oo)

3*x^(-1/2) = 27 // - 27

3*x^(-1/2)-27 = 0

3*x^(-1/2) = 27 // : 3

x^(-1/2) = 9

-1/2 < 0

1/(x^(1/2)) = 9 // * x^(1/2)

1 = 9*x^(1/2) // : 9

1/9 = x^(1/2)

x^(1/2) = 1/9 // ^ 2

x = 1/81

x = 1/81

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