What is the domain of f(x)=3x^3+4x ?

The domain of f(x)=3x^3+4x is -infinity <x<infinity

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domain of f(x)=3x^3+4x

domain

f (x) = 3 x^{3} + 4 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

(2, - 1), (7, 3)

f (x) = x + 2

f (x) = - 3 - 2 x

f (x) = \frac{1}{x ^{2} - 25}

f (x) = \frac{6 x + 1}{x - 4}

What is the domain of f(x)=3x^3+4x ?
The domain of f(x)=3x^3+4x is -infinity <x<infinity