3/2=15/r

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Solution for 3/2=15/r equation: 


D( r )

r = 0

r = 0

r = 0

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

3/2 = 15/r // - 15/r

3/2-(15/r) = 0

3/2-15*r^-1 = 0

-15*r^-1 = -3/2 // : -15

r^-1 = 1/10

-1 < 0

1/(r^1) = 1/10 // * r^1

1 = 1/10*r^1 // : 1/10

10 = r^1

r = 10

r = 10

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