keg2
keg2
03-05-2018
Mathematics
contestada
What is the domain of the function
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mayadc821
mayadc821
03-05-2018
I believe the domain is x ≥ -7 because -7 is the smallest number that x can be to keep the value under the square root positive:
3√6(-7)+42
3√-42+42
3√0
0
If the number under the square root was negative, then its solutions wouldn't be real numbers. Therefore, x has to be equal to or greater than -7.
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