Find the Domain x^2+1

Problem

x2+1

Solution

1. Identify the type of function. The expression x2+1 is a polynomial function.

2. Determine if there are any restrictions. Polynomials do not have denominators that could be zero or square roots of negative numbers.

3. Conclude that the function is defined for all real numbers.

Final Answer

Domain:(−∞,∞)

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