a^7/a^4

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Solution for a^7/a^4 equation: 


D( a )

a^4 = 0

a^4 = 0

a^4 = 0

1*a^4 = 0 // : 1

a^4 = 0

a = 0

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

(a^7)/(a^4) = 0

1*a^3 = 0 // : 1

a^3 = 0

a = 0

a in { 0} 

a belongs to the empty set

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