1.25/r=5

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Solution for 1.25/r=5 equation: 


D( r )

r = 0

r = 0

r = 0

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

1.25/r = 5 // - 5

1.25/r-5 = 0

1.25*r^-1 = 5 // : 1.25

r^-1 = 4

-1 < 0

1/(r^1) = 4 // * r^1

1 = 4*r^1 // : 4

1/4 = r^1

r = 1/4

r = 1/4

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