Find the domain in #y=sqrt(4-x)#?
1 Answer
Mar 19, 2018
Explanation:
Since this is a square root, the values inside cannot be lesser that 0. Else, you would end up with an imaginary number. So, with that information, we can write the inequality:
Solve for
Now, when we multiply both sides by a negative, we have to switch the signs:
We can also represent this as:
And there we have our answer.