11/7=9/u

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Solution for 11/7=9/u equation: 


D( u )

u = 0

u = 0

u = 0

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

11/7 = 9/u // - 9/u

11/7-(9/u) = 0

11/7-9*u^-1 = 0

-9*u^-1 = -11/7 // : -9

u^-1 = 11/63

-1 < 0

1/(u^1) = 11/63 // * u^1

1 = 11/63*u^1 // : 11/63

63/11 = u^1

u = 63/11

u = 63/11

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