SOLUTION: find the domain of f(x) = sqrt(16-x^2)

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Question 673192: find the domain of f(x) = sqrt(16-x^2)
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
f(x) = sqrt%2816-x%5E2%29
Cannot have a negative under square root, so
0%3C=16-x%5E2
Rearrange
x%5E2+%3C=+16
sqrt%28x%5E2%29 <= +/- sqrt%2816%29
-4+%3C=+x+%3C=+4
...
Domain is all x between -4 and 4
[-4, 4]
...
graph%28300%2C200%2C-5%2C5%2C-2%2C10%2Csqrt%2816-x%5E2%29%29
.....................
Delighted to help.
-Reading Boosters
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