missyconnors missyconnors
  • 09-08-2015
  • Mathematics
contestada


Find the domain of f(x)=square root x^2−36.


Select one:
a. x≥6 or x≤−6
b. x≥36
c. all real numbers
d. x≥6

Respuesta :

Benjamin16
Benjamin16 Benjamin16
  • 09-08-2015
[tex]f(x)= \sqrt{x^{2}-36} \\ \\ D: x^{2}-36 \geq 0 \\ \\ (x-6)(x+6) \geq 0 \\ \\ x+6=0 \ \vee \ x-6=0 \\ \\ x=-6 \ \vee \ x=6 \\ \\ x\in (-\infty,-6 ) \ \cup \ (6,+\infty)[/tex]
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