Math Problem Statement

What does the equation y = x2 represent as a curve in the set of real numbers2?

Solution

The equation

y=x2y = x^2

represents a parabola in the set of real numbers R2\mathbb{R}^2.

Key Characteristics of the Curve:

  1. Shape: The graph of y=x2y = x^2 is a parabola that opens upwards. The curve is symmetric about the y-axis.

  2. Vertex: The vertex of the parabola is at the origin (0,0)(0, 0). This is the lowest point on the curve because the coefficient of x2x^2 is positive, indicating the parabola opens upwards.

  3. Axis of Symmetry: The parabola is symmetric around the y-axis. Mathematically, for every point (x,y)(x, y) on the curve, the point (x,y)(-x, y) is also on the curve.

  4. Domain: The domain of the function is all real numbers, R\mathbb{R}, because you can plug in any real value for xx.

  5. Range: The range of the function is all non-negative real numbers, [0,)[0, \infty), because the square of any real number xx is always non-negative.

Visual Representation:

The parabola starts from the vertex at (0,0)(0, 0), and as xx increases or decreases, the value of y=x2y = x^2 increases, forming a "U"-shaped curve.

Would you like more details, or do you have any specific questions about this curve?

Related Questions:

  1. How does the equation change if the parabola opens downward?
  2. What happens to the graph of y=x2y = x^2 if we add a constant term?
  3. How does the graph of y=ax2y = ax^2 differ from y=x2y = x^2 for different values of aa?
  4. How would you find the focus and directrix of the parabola represented by y=x2y = x^2?
  5. What transformations would move the vertex of this parabola to another point?

Tip: When analyzing quadratic equations like y=x2y = x^2, always consider the effect of coefficients and constants on the shape and position of the graph.

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Functions
Graphing Parabolas

Formulas

y = x^2 (Quadratic Function)

Theorems

Parabola Properties
Symmetry about the y-axis

Suitable Grade Level

Grades 9-10