(4r^-1*r)^-3/r

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Solution for (4r^-1*r)^-3/r equation: 


D( r )

r = 0

4*r^-1*r = 0

r = 0

r = 0

4*r^-1*r = 0

4*r^-1*r = 0

4 = 0

r belongs to the empty set

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

((4*r^-1*r)^-3)/r = 0

1/64*r^-1 = 0 // : 1/64

r^-1 = 0

r należy do O

r belongs to the empty set

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