амплитуда cos^{855}(x)

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

☐²

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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обратная tanh²(x)

Solution

arctanh(√x), arctanh(−√x)

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cos(2x)−cos(4x)sin(2x)+sin(4x) =tan(x)

Манипуляции с левой стороны

cos(2x)−cos(4x)sin(2x)+sin(4x)

Перепишите используя тригонометрические тождества

=sin(x)cos(x)

Испльзуйте основное тригонометрическое тождество: sin(x)cos(x) =tan(x)

=tan(x)

Мы показали, что две стороны могут принимать одинаковую форму

⇒ Верно

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домен tanh²(x)

диапазон tanh²(x)

периодичность tanh²(x)

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

амплитуда cos^{855}(x)

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