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

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

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domain of e^{-2x}

domain

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{x + 4}{x - 1}

lo g_{2} (x^{2} - x - 90)

9 x + 5

x + 1 + 1 - x

f (x) = \frac{( 3 x - 8 )}{x ^{2} - 9 x + 20}