What is the domain of f(x)=2^{-x} ?

The domain of f(x)=2^{-x} is -infinity <x<infinity

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domain of f(x)=2^{-x}

domain

f (x) = 2^{- x}

- \infty < x < \infty

Interval Notation

(- \infty, \infty)

Solution steps

The function has no undefined points nor domain constraints. Therefore, the domain is

- \infty < x < \infty

y = x^{2} - 2 x + 1

f (x) = 8 - 5 x

\frac{x ^{3} - 16 x}{- 3 x ^{2} + 3 x + 18}

f (x) = 0.3 (4)^{x}

θ = \frac{π}{3}

What is the domain of f(x)=2^{-x} ?
The domain of f(x)=2^{-x} is -infinity <x<infinity