(r^10-1)/(r^30-1)

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Solution for (r^10-1)/(r^30-1) equation: 


D( r )

r^30-1 = 0

r^30-1 = 0

r^30-1 = 0

1*r^30 = 1 // : 1

r^30 = 1

r^30 = 1 // ^ 1/30

abs(r) = 1

r = 1 or r = -1

r in (-oo:-1) U (-1:1) U (1:+oo)

(r^10-1)/(r^30-1) = 0

1*r^10 = 1 // : 1

r^10 = 1

r^10 = 1 // ^ 1/10

abs(r) = 1

r = 1 or r = -1

r in { 1} 

r in { -1} 

r belongs to the empty set

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