a^-3=1/27

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Solution for a^-3=1/27 equation: 


D( a )

a = 0

a = 0

a = 0

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

a^-3 = 1/27 // - 1/27

a^-3-(1/27) = 0

a^-3-1/27 = 0

1*a^-3 = 1/27 // : 1

a^-3 = 1/27

-3 < 0

1/(a^3) = 1/27 // * a^3

1 = 1/27*a^3 // : 1/27

27 = a^3

a^3 = 27 // ^ 1/3

a = 3

a = 3

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