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raymondanthony3314
21.08.2019 •
Mathematics
Find the center, vertices, and foci of the ellipse with equation 5x2 + 8y2 = 40.
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Ответ:
Center of the ellipse = (0, 0)
vertices are (±√8, 0) and (0, ±√5)
Focus of the ellipse = (±√3, 0).
Step-by-step explanation:
Equation of an ellipse is given as 5x² + 8y² = 40
We will rewrite this equation in the vertex form
⇒![\frac{x^{2}}{8}+\frac{y^{2}}{5}=1](/tpl/images/0185/8805/f8a1a.png)
⇒![\frac{(x-0)^{2}}{8}+\frac{(y-0)^{2}}{5}=1](/tpl/images/0185/8805/9d033.png)
This equation is in the form of
⇒![\frac{(x-h)^{2}}{a^{2}}+\frac{(y-k)^{2}}{b^{2}}=1](/tpl/images/0185/8805/48c36.png)
Then Center of the ellipse is (h, k) and major vertices will be (h±a, k) with minor vertices will be (h, k±b)
and focus is (h±c, k) where c =![\sqrt{a^{2}-b^{2}}](/tpl/images/0185/8805/055c0.png)
Now we put the values h = 0 and k = 0
Center of this ellipse will be (0, 0)
Vertices of the ellipse will be
Major vertices = (0±√8, 0) = (±√8, 0)
Minor vertices = (0, 0±√5) = (0, ±√5)
Now Focus of the ellipse = (0±c, 0)
where c = √(a² - b²) = √(8-5) = √3
Now focus is (±√3, 0).
Ответ:
HJ
Step-by-step explanation:
it is what it is