7x^-3=9/e^3

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Solution for 7x^-3=9/e^3 equation: 


D( x )

x = 0

e^3 = 0

x = 0

x = 0

e^3 = 0

e^3 = 0

e^3 = 0

x belongs to the empty set

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

7*x^-3 = 9/(e^3) // - 9/(e^3)

7*x^-3-(9/(e^3)) = 0

7*x^-3-9*e^-3 = 0

7*x^-3 = -(-9*e^-3) // : 7

x^-3 = (9*e^-3)/7

-3 < 0

1/(x^3) = (9*e^-3)/7 // * x^3

1 = ((9*e^-3)/7)*x^3 // : (9*e^-3)/7

(7*e^3)/9 = x^3

x^3 = (7*e^3)/9 // ^ 1/3

x = (7^(1/3)*e)/(9^(1/3))

x = (7^(1/3)*e)/(9^(1/3))

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