What is the domain of f(x)=4e^{-x} ?

The domain of f(x)=4e^{-x} is -infinity <x<infinity

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domain of f(x)=4e^{-x}

domain

f (x) = 4 e^{- 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

f (x) = 640 x - 64 x^{2}

\frac{x}{x ^{2} + 3 x + 5}

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

f (x) = lo g_{2} (\frac{1}{x})

f (x) = 2 \cdot x^{3} - 4 \cdot x^{2} + \frac{8}{3}

What is the domain of f(x)=4e^{-x} ?
The domain of f(x)=4e^{-x} is -infinity <x<infinity