What is the domain of f(x)=x^3+2x ?

The domain of f(x)=x^3+2x is -infinity <x<infinity

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domain of f(x)=x^3+2x

domain

f (x) = x^{3} + 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

ln (4 x - x^{2})

f (x) = 3 x^{2} - 4 x - 5

y = \frac{x}{2} + 4

f (x) = 4 x^{3} - 120 x^{2} + 800 x

x^{2} + 8 x + 15

What is the domain of f(x)=x^3+2x ?
The domain of f(x)=x^3+2x is -infinity <x<infinity