x^(-1/7)=1/3

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Solution for x^(-1/7)=1/3 equation: 


D( x )

x = 0

x = 0

x = 0

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

x^(-1/7) = 1/3 // - 1/3

x^(-1/7)-(1/3) = 0

x^(-1/7)-1/3 = 0

1*x^(-1/7) = 1/3 // : 1

x^(-1/7) = 1/3

-1/7 < 0

1/(x^(1/7)) = 1/3 // * x^(1/7)

1 = 1/3*x^(1/7) // : 1/3

3 = x^(1/7)

x^(1/7) = 3 // ^ 7

x = 2187

x = 2187

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