11/12=12/r

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Solution for 11/12=12/r equation: 


D( r )

r = 0

r = 0

r = 0

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

11/12 = 12/r // - 12/r

11/12-(12/r) = 0

11/12-12*r^-1 = 0

-12*r^-1 = -11/12 // : -12

r^-1 = 11/144

-1 < 0

1/(r^1) = 11/144 // * r^1

1 = 11/144*r^1 // : 11/144

144/11 = r^1

r = 144/11

r = 144/11

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