Algebra Textbooks Boundless Algebra Conic Sections The Circle and the Ellipse
Algebra Textbooks Boundless Algebra Conic Sections
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Introduction to Ellipses

Ellipse along $y$-axis

Ellipse along $y$-axis

The ellipse $x^2 +\left( \frac{y}{3} \right)^2 = 1$ has been stretched along the $y$-axis by a factor of 3 as compared to the circle $x^2 + y^2 = 1$.

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    Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:

    "Original figure by Julien Coyne. Licensed CC BY-SA 4.0."
    Julien Coyne CC BY-SA 3.0.