(11-x)/(x^2-121)

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Solution for (11-x)/(x^2-121) equation: 


D( x )

x^2-121 = 0

x^2-121 = 0

x^2-121 = 0

1*x^2 = 121 // : 1

x^2 = 121

x^2 = 121 // ^ 1/2

abs(x) = 11

x = 11 or x = -11

x in (-oo:-11) U (-11:11) U (11:+oo)

(11-x)/(x^2-121) = 0

11-x = 0 // - 11

-x = -11 // * -1

x = 11

x in { 11} 

x belongs to the empty set

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