(x^{11})/(x^{-3)}

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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

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焦点 y=x²+1

Solution

(0, 54 )

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放物線の焦点

放物線は複数の点の軌跡であり,1つの点（焦点）までの距離は1つの線（準線）までの距離に等しい

放物線の標準的なequation

4p(y−k)=(x−h)² は上下に面する放物線の標準的なequationで,頂点は (h, k),
焦点距離は |p| である

y=x²+1 を標準的な形式で書き換える: 4· 14 (y−1)=(x−0)²

(h, k)=(0, 1), p=14

放物線は y 軸に対して対称なので,焦点は y 軸に沿って中心 (0, 1) から距離 p にある

(0, 1+p)

=(0, 1+14 )

改良

(0, 54 )

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−▭▭	<	7	8	9	÷	`AC`
+▭▭	>	4	5	6	×	☐☐☐
×▭▭	(	1	2	3	−	`x`
▭ \|▭	)	.	0	=	+	`y`

(x^{11})/(x^{-3)}

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