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2/3-3/8

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

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

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범위 y=x²+x+1x

Solution

f(x)≤ −1 or f(x)≥ 3

Interval Notation

(−∞ , −1]∪ [3, ∞ )

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Solution steps

One step at a time

함수 범위 정의

함수가 정의되는 종속 변수의 값 집합

로 고쳐 쓰다

x²+x+1x =y

양쪽을 곱한 값 x

x²+x+1=yx

범위는 판별식이 0보다 크거나 같은 y의 집합입니다

판별식 x²+x+1=yx: y²−2y−3

y²−2y−3≥ 0 : y≤ −1 or y≥ 3

범위 간격 끝점이 포함되어 있는지 확인

y=−1 : 포함된

y=3 : 포함된

따라서 범위는 다음과 같습니다

f(x)≤ −1 or f(x)≥ 3

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도메인 x²+x+1x

역함수 x²+x+1x

가로채기 x²+x+1x

Fractions Add, Subtract Unlike Denominators Examples

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안녕, 질문하다 범위 y=x²+x+1x

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Notebook

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

2/3-3/8

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