Final answer:
The curve y = |x|² - x² is known as a parabolic curve.
Step-by-step explanation:
The curve y = |x|² - x² is known as a) A parabolic curve.
To understand why this curve is parabolic, we can rewrite the equation as y = x² - x², which simplifies to y = 0. This means that the curve is a horizontal line at the y-axis.
Since the curve is symmetric with respect to the y-axis, it is a parabola. The equation y = |x|² - x² represents a parabolic curve.