14/r=2

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Solution for 14/r=2 equation: 


D( r )

r = 0

r = 0

r = 0

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

14/r = 2 // - 2

14/r-2 = 0

14*r^-1 = 2 // : 14

r^-1 = 1/7

-1 < 0

1/(r^1) = 1/7 // * r^1

1 = 1/7*r^1 // : 1/7

7 = r^1

r = 7

r = 7

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