What is the domain of y=e^{-2x} ?

The domain of y=e^{-2x} is -infinity <x<infinity

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domain of y=e^{-2x}

domain

y = e^{- 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

f (x) = \frac{2 x ^{2} + x - 1}{x + 4}

f (x) = 5 x^{2} + 7

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

f (x) = \frac{1}{x ^{2} - 6 x + 12}

f (x) = x^{2} + 5 x

What is the domain of y=e^{-2x} ?
The domain of y=e^{-2x} is -infinity <x<infinity