(2r/r-4)-2

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Solution for (2r/r-4)-2 equation: 


D( r )

r = 0

r = 0

r = 0

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

(2*r)/r-4-2 = 0

-4 = 0

r belongs to the empty set

r belongs to the empty set

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