- #1

karush

Gold Member

MHB

- 3,269

- 5

Find the domain of $f(x)=\sqrt{x^2-25}$

a. $[x\le-5]U[x\ge 5]$

b. x=5

c. $5 \le x$

d. $x\ne 5$

e. $\textit{all reals}$

well just by observation because of the radical I chose c.

but was wondering if imaginary numbers could be part of the domain alto it is not asked for here

https://dl.orangedox.com/QS7cBvdKw55RQUbliE