Question

Find the domain
f(x)=square root of x+2

Answer 1

\[\sqrt{x+2}\]
find the domain

Answer 2

[-2, infinity]

Answer 3

how you have got it ?

Answer 4

so why is this ? please --- explain please for understanding

Answer 5

Square root functions domains cannot be negative, so all you have to do to solve this is find where x+2 is positive. x+2 is positive as long as x is greater than or equal to -2.

Answer 6

Another one
\[\sqrt{x-3}\div x-6\]

Answer 7

because of the x-6 in the denominator, the function will be undefined @x=6. Other than that its just like the previous one, so the domain would be [3,6) or (6, infinity)

Answer 8

and*