What is the domain of f(x)=(4/x)+2 ?

The domain of f(x)=(4/x)+2 is x 0

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domain of f(x)=(4/x)+2

domain

f (x) = (\frac{4}{x}) + 2

x < 0 or x > 0

Interval Notation

(- \infty, 0) \cup (0, \infty)

Solution steps

Find undefined (singularity) points:

x = 0

The function domain

x < 0 or x > 0

f (x) = lo g_{10} (4 x - x^{2})

f (x) = x - 4 - \frac{3}{5 - x}

y = \frac{x ^{2}}{x ^{2} - 9}

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

f (x) = e^{10 x}