What is the domain and range of y=x^2?

1 Answer
Stefan V.
Aug 31, 2015

Domain: (-oo, + oo)
Range: [0, + oo)

Explanation:

The function is defined for any value of x in RR, so its domain will have no restrictions. In interval notation, the function's domain will be (-oo, + oo).

Since you're dealing with the square of a real number, the function can never be negative, regardless of the value of x in RR.

x^2 >= 0", "(AA)x in RR

This means that its range will be [0, + oo).

graph{x^2 [-16.02, 16.02, -8.01, 8.01]}

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