Question

Which of the following is true about the function below?

Answer 1

I know its not D

Answer 2

there can not be a negative inside the square root

Answer 3

x+4>0

because of that statement

Answer 4

C

Answer 5

x+4>0
x>-4

Answer 6

I was going to say A can you tell me why it's c @El-naggar

Answer 7

this function can't give negative values

Answer 8

How come?

Answer 9

I know the Domain is -4, infinity

Answer 10

Oh scratch that so it can be B or C then

Answer 11

@Romero yes,but the range in B contain negative values

Answer 12

A is definitely out as the leading bracket [ means "include -4" which you do not want to do

generally, for square root you choose the principal value (plus), unless explicitly noted with ±

Answer 13

Ok true like I said before inside the square root can not be lower than zero (negative values) so then we know the range has to be 0 or greater. No negative values

Answer 14

So it's C

Answer 15

i think it is C as well

Answer 16

to be precise: the parentheses (0, means exclude 0. You only approach 0 in the limit as x-> infinity