periodicity of 2cos(3x)

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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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Steps Examples

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expand (6−4x²)(x²+5x−2)

Solution

−4x⁴−20x³+14x²+30x−12

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Solve by:

פתור בעזרת הנוסחה הריבועית

פתור בעזרת השלמה לריבוע

פתור בעזרת פירוק לגורמים

One step at a time

−x²−x+6=0

פתור בעזרת הנוסחה הריבועית

x_{1, 2}=−(−1)± √(−1)²−4(−1)· 62(−1)

√(−1)²−4(−1)· 6=5

x_{1, 2}=−(−1)± 52(−1)

Separate the solutions

x₁=−(−1)+52(−1) , x₂=−(−1)−52(−1)

x=−(−1)+52(−1) : −3

x=−(−1)−52(−1) : 2

הפתרונות למשוואה הריבועית הם

x=−3, x=2

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היי, לשאול שאלה לגבי expand (6−4x²)(x²+5x−2) או בחר מבין האפשרויות למטה

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

periodicity of 2cos(3x)

Solution

Solution steps

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