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What is the domain of the function f(x) = sqrt1/3x+2

1 Answer

5 votes

Answer:

x ≥ -6

Explanation:

Please use parentheses around the argument (input) of the sqrt function:

Better: sqrt( 1/3x + 2)

Much better: sqrt ( (1/3)x + 2)

The input to the sqrt function must be 0 or greater. Thus, we must solve the equation (1/3)x + 2 ≥ 0. Mult. all 3 terms by 3, we get x + 6 ≥ 0, or x ≥ -6.



User Jim Stewart
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