Question

what is the lower bound (minimum) of the domain of f(x)=sqrt(x^2-25)

Answer 1

\(x^{2} - 25 \ge 0\)

Answer 2

Yup...Use the above condition

Answer 3

i got [5,inf) but they said wrong why?

Answer 4

(x+5) (x-5) > = 0

(-infinity,5] U [5,infinity)

Answer 5

u have to check for both the conditions

Answer 6

no need ti take negatives only +ve

Answer 7

The question asks for lower bound minimum right ?

Answer 8

yeah i know how to find it but they said wrong

Answer 9

The problem statement appears to want ONLY the lower bound, not a whole range or any other description. The correct answer to this is "There is no Lower Bound".