(x2+y2-1)3-x2y3=0 Solution

3 min read Jun 03, 2024
(x2+y2-1)3-x2y3=0 Solution

Solving the Equation (x^2 + y^2 - 1)^3 - x^2y^3 = 0

In this article, we will explore the solution to the equation (x^2 + y^2 - 1)^3 - x^2y^3 = 0. This equation may seem complex, but with the right approach, we can find the solutions.

Step 1: Simplify the Equation

Let's start by simplifying the equation. We can begin by expanding the cube:

(x^2 + y^2 - 1)^3 = x^6 + 3x^4y^2 + 3x^2y^4 - x^4 - 3x^2y^2 - y^4 + 1

Now, subtract x^2y^3 from both sides of the equation:

x^6 + 3x^4y^2 + 3x^2y^4 - x^4 - 3x^2y^2 - y^4 + 1 - x^2y^3 = 0

Step 2: Factorize the Equation

Next, we'll try to factorize the equation. After some manipulation, we get:

(x^2 + y^2 - 1)(x^4 - x^2y^2 - y^4 + 1) - x^2y^3 = 0

Step 3: Analyze the Factors

Now, we'll analyze the factors. The first factor x^2 + y^2 - 1 equals to zero when x^2 + y^2 = 1, which is the equation of a unit circle centered at the origin.

The second factor x^4 - x^2y^2 - y^4 + 1 can be rewritten as (x^2 - 1)(x^2 - y^2). This factor equals to zero when x^2 = 1 or x^2 = y^2.

Step 4: Find the Solutions

Combining the results from Steps 2 and 3, we get the following solutions:

  • x^2 + y^2 = 1 (unit circle)
  • x^2 = 1 (two vertical lines: x = 1 and x = -1)
  • x^2 = y^2 (two diagonal lines: y = x and y = -x)

These are the solutions to the equation (x^2 + y^2 - 1)^3 - x^2y^3 = 0.

Conclusion

In this article, we successfully solved the equation (x^2 + y^2 - 1)^3 - x^2y^3 = 0. The solutions include a unit circle, two vertical lines, and two diagonal lines. This problem demonstrates the importance of algebraic manipulation and factorization in solving complex equations.

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