0.5/r=2

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Solution for 0.5/r=2 equation: 


D( r )

r = 0

r = 0

r = 0

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

0.5/r = 2 // - 2

0.5/r-2 = 0

0.5*r^-1 = 2 // : 0.5

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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