8/3=2/r

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Solution for 8/3=2/r equation: 


D( r )

r = 0

r = 0

r = 0

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

8/3 = 2/r // - 2/r

8/3-(2/r) = 0

8/3-2*r^-1 = 0

-2*r^-1 = -8/3 // : -2

r^-1 = 4/3

-1 < 0

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

1 = 4/3*r^1 // : 4/3

3/4 = r^1

r = 3/4

r = 3/4

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