u^7/u^4

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Solution for u^7/u^4 equation: 


D( u )

u^4 = 0

u^4 = 0

u^4 = 0

1*u^4 = 0 // : 1

u^4 = 0

u = 0

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

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

1*u^3 = 0 // : 1

u^3 = 0

u = 0

u in { 0} 

u belongs to the empty set

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