What is the domain of f(x)=x^4+12x^2+42 ?

The domain of f(x)=x^4+12x^2+42 is -infinity <x<infinity

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domain of f(x)=x^4+12x^2+42

domain

f (x) = x^{4} + 12 x^{2} + 42

- \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

\frac{1}{x + 7}

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

\frac{1}{x} - 1

f (x) = - x + 3

f (x) = 5 - 8 x

What is the domain of f(x)=x^4+12x^2+42 ?
The domain of f(x)=x^4+12x^2+42 is -infinity <x<infinity