The function f(x) = x
4 is a polynomial function.
For the domain of the function, there are no restrictions on the values of x. In other words, x can be any real number. Therefore, the domain of the function f(x) = x
4 is (-∞, ∞).
For the range of the function, since x
4 is always non-negative, the range of f(x) is [0, ∞). This means that the values of f(x) are all real numbers greater than or equal to zero.
Therefore, the correct answer is:
B.
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