(w-7)/(w^2-4)

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Solution for (w-7)/(w^2-4) equation: 


D( w )

w^2-4 = 0

w^2-4 = 0

w^2-4 = 0

1*w^2 = 4 // : 1

w^2 = 4

w^2 = 4 // ^ 1/2

abs(w) = 2

w = 2 or w = -2

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

(w-7)/(w^2-4) = 0

w-7 = 0 // + 7

w = 7

w = 7

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