3/r=12/5

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Solution for 3/r=12/5 equation: 


D( r )

r = 0

r = 0

r = 0

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

3/r = 12/5 // - 12/5

3/r-(12/5) = 0

3/r-12/5 = 0

3*r^-1 = 12/5 // : 3

r^-1 = 4/5

-1 < 0

1/(r^1) = 4/5 // * r^1

1 = 4/5*r^1 // : 4/5

5/4 = r^1

r = 5/4

r = 5/4

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