phạm vi (x^3-2x^2-3x)/(x^2-4)

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

☐²

x^☐

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^□√☐

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ddx

≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

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y^{′ ′}+7y^′−30y=0

Solution

y=c₁e^3t+c₂e^−10t

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Tiêu điểm Elip

Đối với hình elip có trục chính song song với trục x, Foci (tiêu điểm) được xác định là (h+c, k), (h−c, k),
trong đóc=√a²−b² là khoảng cách từ tâm (h, k) đến tiêu điểm

(h+c, k), (h−c, k)

Tính thuộc tính hình elip

(x−1)²9 +y²5 =100: Hình elip có tâm (h, k)=(1, 0), a=30, b=10√5

(1+c, 0), (1−c, 0)

Tính c:

c=√30²−(10√5)²: 20

(1+20, 0), (1−20, 0)

Tinh chỉnh

(21, 0), (−19, 0)

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

phạm vi (x^3-2x^2-3x)/(x^2-4)

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