square root of 20

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

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ddx

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

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범위 3x²+4

Solution

f(x)≥ 4

Interval Notation

[4, ∞ )

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Solution steps

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함수 범위 정의

함수가 정의되는 종속 변수의 값 집합

꼭짓점 3x²+4: 극히 적은 양 (0, 4)

포물선으로 ax²+bx+c 정점과 함께 (x_v, y_v)
이면 a<0 범위는 f(x)≤ y_v
이면 a>0 범위는 f(x)≥ y_v
a=3, 정점 (x_v, y_v)=(0, 4)

f(x)≥ 4

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도메인 3x²+4

정점 3x²+4

역함수 3x²+4

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

square root of 20

Solution

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