252/u/u=7

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Solution for 252/u/u=7 equation: 


D( u )

u = 0

u = 0

u = 0

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

(252/u)/u = 7 // - 7

(252/u)/u-7 = 0

252*u^-2 = 7 // : 252

u^-2 = 1/36

-2 < 0

1/(u^2) = 1/36 // * u^2

1 = 1/36*u^2 // : 1/36

36 = u^2

u^2 = 36 // ^ 1/2

abs(u) = 6

u = 6 or u = -6

u in { 6, -6 }

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