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wendy1538
06.12.2020 •
Mathematics
FINDE THE DOMAIN OF THE FUNCTION
g(x)=roots x+7
write your answer using INTERVAL NOTATION.
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Ответ:
Domain: [-7, ∞)
General Formulas and Concepts:
Algebra I
Domain is the set of x-values that can be inputted into function f(x)Step-by-step explanation:
Step 1: Define function
g(x) = √(x + 7)
Step 2: Determine
We know that we cannot have a negative under the square root as it will produce imaginary numbers. Therefore, on a real number scale, the square root can be no less than or equal to 0.
We see from the function that in order to get 0 under the square root, x = -7. If we have x = -8, we would get -1 under the square root, thus giving us an imaginary numbers.
Therefore, our domain is x ≥ -7 or [-7, ∞).
Ответ:
Time. Water
0.5. 0.8
1. 1.6
3. 4.8
25. 40