7/r-10.5

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Solution for 7/r-10.5 equation: 


D( r )

r = 0

r = 0

r = 0

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

7/r-10.5 = 0

7*r^-1 = 10.5 // : 7

r^-1 = 1.5

-1 < 0

1/(r^1) = 1.5 // * r^1

1 = 1.5*r^1 // : 1.5

0.66666667 = r^1

r = 0.66666667

r = 0.66666667

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