Math Problem Statement

  1. Draw a rough picture of each set: a) A = [0, 4] b) A × A, where A is as in part (a) c) B = {(x, y) ∈ R 2 : x ≥ 4} d) BC, where B is as in part (c) e) D = {(x, y) ∈ R 2 : x 2 + y 2 ≤ 25} f) B ∩ D, where B and D are as above

Solution

{"size":"1024x1024","prompt":"A series of rough sketches representing mathematical sets: \n\n1. A = [0, 4], a horizontal line segment on the x-axis from 0 to 4.\n2. A × A, a square in the xy-plane with vertices at (0,0), (0,4), (4,0), and (4,4).\n3. B = {(x, y) ∈ R² : x ≥ 4}, a shaded half-plane on the right side of the line x=4 in the xy-plane.\n4. Bᶜ, the complement of B, which is the shaded half-plane on the left side of the line x=4 in the xy-plane.\n5. D = {(x, y) ∈ R² : x² + y² ≤ 25}, a shaded circle with a radius of 5 centered at the origin.\n6. B ∩ D, the intersection of sets B and D, which is the shaded region where the half-plane B and the circle D overlap, specifically the part of the circle on or to the right of x=4."}I am unable to draw the rough sketches at the moment, but I can describe how you can sketch each of these sets:

  1. A = [0, 4]:

    • Draw a number line (x-axis).
    • Mark points 0 and 4 on the line.
    • Shade the segment between 0 and 4, including both endpoints.
  2. A × A:

    • In a coordinate plane (xy-plane), plot the points (0,0), (0,4), (4,0), and (4,4).
    • Connect these points to form a square.
    • Shade the entire square. This represents all points (x,y)(x, y) where both xx and yy are in the interval [0, 4].
  3. B = {(x, y) \in \mathbb{R}^2 : x \geq 4}:

    • Draw a vertical line at x=4x = 4 on the xy-plane.
    • Shade the region to the right of this line. This represents all points where x4x \geq 4.
  4. Bᶜ (complement of B):

    • Using the same coordinate plane as in part (c), shade the region to the left of the line x=4x = 4. This represents all points where x<4x < 4.
  5. D = {(x, y) \in \mathbb{R}^2 : x^2 + y^2 \leq 25}:

    • Draw a circle centered at the origin (0,0) with a radius of 5.
    • Shade the entire area inside the circle. This represents all points (x,y)(x, y) that satisfy the equation x2+y225x^2 + y^2 \leq 25.
  6. B ∩ D (intersection of B and D):

    • Use the same coordinate plane with the circle from part (e) and the vertical line from part (c).
    • The intersection is the region within the circle that is also to the right of the line x=4x = 4.
    • Shade this overlapping area.

Would you like more details on any specific part or help with another topic?

Here are 5 related questions you might consider:

  1. How would the set A×AA \times A change if A=[2,3]A = [-2, 3]?
  2. How do you find the area of the region represented by BDB \cap D?
  3. What happens to the graph of DD if the inequality changes to x2+y2<25x^2 + y^2 < 25?
  4. How does the complement BCB^C change if B={(x,y)R2:x2}B = \{(x, y) \in \mathbb{R}^2 : x \leq 2\}?
  5. What is the union of sets BB and DD?

Tip: Understanding the geometric representation of sets in a coordinate plane can greatly help in visualizing solutions to problems involving inequalities.

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Math Problem Analysis

Mathematical Concepts

Sets
Cartesian Product
Inequalities
Geometric Shapes

Formulas

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Theorems

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Suitable Grade Level

Grades 10-12