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How do I find the domain of the function #f(x)=5x^2+2x-1#?

Answer 1

Elijah Allen

A polynomial function has as domain the whole set of #RR#, so:

#(-oo,+oo)#.

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Answer 2

Benjamin Achtenberg

To find the domain of the function ( f(x) = 5x^2 + 2x - 1 ), we need to determine all possible values of ( x ) for which the function is defined. Since ( f(x) ) is a polynomial function, it is defined for all real numbers ( x ). Therefore, the domain of the function is all real numbers, denoted as ( (-\infty, +\infty) ).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.