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3 years ago

What is the domain of the function f(x)= ln(x^2-4)? Please show your work.

Mathematics

2 answers:

Orlov [11]3 years ago

8 0

Hello,

A ln must have like argument a positive number.

x²-4>0 whose roots are 2 and -2.
To be positive, the value of must be exterior of the roots

so -infinity<x<-2 or 2<x<infinity

Dom f(x)=IR - [-2; 2].

snow_lady [41]3 years ago

6 0

F(x) = ㏑(x² - 4)

Domain: {-2 ≤ x ≤ 2}, or [-2, 2]

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