How do you find the domain and range of # sqrt(t+7)#?
1 Answer
Feb 16, 2017
Explanation:
a square root can never be negative inside, it would mean that there are no real numbers, no real solution (unless we're going into imaginary numbers)
so set the this rational expression to 0
you put
graph:
graph{y=sqrtx [-10, 10, -5, 5]}
so
and
note: if the equation were
graph:
graph{y = sqrt(x + 7) [-10, 10, -5, 5]}