GAOKAO · Conic Sections · Foundations

Conic Sections: Ellipse math: math?

Ellipse, hyperbola, parabola standard forms.

Try the problem

Ellipse x225+y29=1\dfrac{x^2}{25}+\dfrac{y^2}{9}=1: aa?

Hint and answer

Concept to use

Ellipse $\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$.

Hint

Larger under xx.

Answer

5

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