What is the domain of f(x)=2sqrt(x^2-4) ?

The domain of f(x)=2sqrt(x^2-4) is x = 2

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domain of f(x)=2sqrt(x^2-4)

domain

f (x) = 2 x^{2} - 4

x \leq - 2 or x \geq 2

Interval Notation

(- \infty, - 2] \cup [2, \infty)

Solution steps

Find non-negative values for radicals:

x \leq - 2 or x \geq 2

The function domain

x \leq - 2 or x \geq 2

y = - x + 9

f (x) = x^{3} + 4 x^{2} + 4 x

y = 4 csc (2 x - \frac{π}{4})

f (x) = x^{3} - \frac{3}{2} x^{2}

(0, - 9), (- 3, 5)

What is the domain of f(x)=2sqrt(x^2-4) ?
The domain of f(x)=2sqrt(x^2-4) is x<=-2\lor x>= 2