Mathematics: What are the foci of the graph y2 – 25x2 = 25?

What are the foci of the graph y2 – 25x2 = 25?

Ответ:

brifrog13

10.03.2022

$\bold{(0,-\sqrt{26})\quad \&\quad (0,\sqrt{26})}$

Step-by-step explanation:

$.\qquad y^2-25x^2=25\\\\\implies \dfrac{y^2}{25}-\dfrac{25x^2}{25}=\dfrac{25}{25}\\\\\\\implies \dfrac{y^2}{25}-\dfrac{x^2}{1}=1\\\\\\Center: (0, 0)\\Length\ of\ foci:25+1=c^2\implies \sqrt{26}=c\\Foci: (0,0\pm \sqrt{26})$

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Ответ:

richaeviney

01.09.2020

Mathematics

1,243.88 units² I think

Step-by-step explanation:

22 x 22 = 484

A = (3.14 x 11²)2 = 759.88

759.88 + 484 = 1,243.88 units²

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What are the foci of the graph y2 – 25x2 = 25?

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