Suppose that 16 inches of wire cost 64 cents at the same rate how much in cents will 44 inches of wire cost?

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

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√☐

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log_□

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ddx

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

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証明する sin(3x)+sin(7x)cos(3x)−cos(7x) =cot(2x)

Solution

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sin(3x)+sin(7x)cos(3x)−cos(7x) =cot(2x)

左側を操作する

sin(3x)+sin(7x)cos(3x)−cos(7x)

三角関数の公式を使用して書き換える

=cos(2x)sin(2x)

基本的な三角関数の公式を使用する: cos(x)sin(x) =cot(x)

=cot(2x)

両辺を同じ形式にできることを証明した

⇒ 真

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+▭▭	>	4	5	6	×	☐☐☐
×▭▭	(	1	2	3	−	`x`
▭ \|▭	)	.	0	=	+	`y`

Suppose that 16 inches of wire cost 64 cents at the same rate how much in cents will 44 inches of wire cost?

Solution

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