nessalx
nessalx nessalx
  • 03-11-2020
  • Mathematics
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What is the domain of the function y= √ x+4?

What is the domain of the function y x4 class=

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jimthompson5910 jimthompson5910
  • 03-11-2020

Answer: Choice C

The x input of a square root function can be 0 or larger. If you take the square root of a negative number, then you'll get a complex number as a result. So we restrict the domain so that y is a real number.

We can say [tex]x \ge 0[/tex] or we can write what choice C shows to be more thorough, but they mean the same thing.

note: [tex]0 \le x < \infty[/tex] converts to the interval notation [tex][0, \infty)[/tex]

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