How do you find the domain of $f(x) = -4sqrtx$ ?

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Answer 1 · 2018-04-15T03:40:16

$x>=0, [0,oo)$

The domain consists of the values of $x$ for which the function $f(x)$ exists.

For $f(x)=-4sqrtx,$ recall that we need to avoid negative square roots, IE, we can only plug in numbers greater than or equal to zero.

The domain is therefore

$x>=0, [0,oo)$

How do you find the domain of f(x) = -4sqrtxf(x) = -4sqrtx?