hoot2535 hoot2535

23-10-2017
Mathematics

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X2+4x-3/X4-5X2+4 what is the domain of this function

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tynollette tynollette

29-10-2017

domain is the value of x
the demonimator cannot be zero
factor the denominator: (x^2-1)(x^2-4)≠0
factor again: (x+1)(x-1)(x+2)(x-2)≠0
x≠1,-1,2,-2
the domain is all real number except 1,-1,2,-2

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