(a^7/5)^-3

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Solution for (a^7/5)^-3 equation: 


D( a )

(a^7)/5 = 0

(a^7)/5 = 0

(a^7)/5 = 0

1/5*a^7 = 0 // : 1/5

a^7 = 0

a = 0

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

((a^7)/5)^-3 = 0

125*a^-21 = 0 // : 125

a^-21 = 0

a należy do O

a belongs to the empty set

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