DestinyKiara99 DestinyKiara99

15-06-2016
Mathematics

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Determine the domain of the function.

f as a function of x is equal to the square root of x plus four divided by x plus two times x minus five.

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sleepyjess sleepyjess

15-06-2016

Since x+4 is under the square root, that's all we need to focus on for the domain. The square root can't be negative, so x+4 MUST be greater than or equal to 0.

[tex]x+4 \geq 0[/tex]
Subtract 4 from both sides
[tex]x \geq -4[/tex]
That's the domain

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