(u^2-2u)/(u^2-4)

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Solution for (u^2-2u)/(u^2-4) equation: 


D( u )

u^2-4 = 0

u^2-4 = 0

u^2-4 = 0

1*u^2 = 4 // : 1

u^2 = 4

u^2 = 4 // ^ 1/2

abs(u) = 2

u = 2 or u = -2

u in (-oo:-2) U (-2:2) U (2:+oo)

(u^2-(2*u))/(u^2-4) = 0

(u^2-2*u)/(u^2-4) = 0

u^2-2*u = 0

u*(u-2) = 0

u-2 = 0 // + 2

u = 2

u*(u-2) = 0

(u*(u-2))/(u^2-4) = 0

( u-2 )

u-2 = 0 // + 2

u = 2

( u )

u = 0

u in { 2} 

u = 0

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