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数学 高校生

答え合わせお願いします🙇‍♀️🙏💦

Ⅱ. 次の英文の空欄 ( 11 ) から ( 20 )に入る最も適切な英単語を, a. ~d.の中から 1つ選びなさい。 解答は解答用紙1枚目 (マークシート方式)の所定の解答欄にマークし なさい。 2893 000 Lego bricks. (Image source: Wikimedia Commons-CC license) Car made from Lego bricks. Lego has unveiled its first bricks made from recycled plastic bottles and ( 11 ) that it hopes to include the pieces in sets within two years. The prototype 4x2 bricks have been made from PET plastic from ( 12 ) bottles with additives to give them the strength of standard Lego parts, and are the result of three years of ( 13 ) with 250 variations of materials. It has already ( 14 ) plans to remove single-use plastic from boxes, and since 2018 has been ( 15 ) parts from bio-polyethylene (bio-PE), made from sustainably sourced sugarcane. These parts are bendy pieces, such as trees, leaves and accessories for figurines. Tim Brooks, vice-president for environmental ( 16 ) at Lego Group, said the biggest challenge was "rethinking and innovating new materials that are as ( 17 ), strong and high (18) as our existing bricks and fit with Lego elements made over the past 60 years". He added: "We're committed to playing our part in building a sustainable future for generations of children. We want our products to have a positive ( 19 ) on the planet, not just with the play they inspire, but also with the materials we use. We still have a long 20 ) we are making." way to go on our journey, but are pleased with the Hillary Osborne, "Lego develops first bricks made from recycled plastic bottles", The Guardian, 23 June, 2021. (https://www.theguardian.com/lifeandstyle/2021/jun/23/lego- develops-first-bricks-made-of-recycled-plastic-bottles) (-)

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数学 高校生

至急お願いしたいです🙇🏻‍♀️三角関数のグラフの問題なんですけど、何故解答のところの、ようにワイ軸の交点がルート3になるのですか?

基本例題 141 三角関数のグラフ (2) 関数 y=2cos/ 0 π (一合) のグラフをかけ。また、その周期を求めよ。 2 6 一 基本のグラフy=cos0 との関係 (拡大・縮小, 平行移動) を調べてかく。 指針 v=2cos (17)より、y=2cos/12(-4)であるから、基本形y=cos0をもとにし てグラフをかく要領は、次の通り。 ① y=costを軸方向に2倍に拡大 ②① を 0 軸方向に2倍に拡大 (1/2倍は誤り)y=2cosm2② Hare π を軸方向に だけ平行移動 2 π 0 y-2.com (12) 20001/12(15) = cos 6 ③3 0 注意 y=2cos (12/17)のグラフがy=2cos 1/2のグラフを軸方向にこだけ平行 移動したものと考えるのは誤りである。 CHART 三角関数のグラフ 基本形を拡大・縮小,平行移動 √√3 |1|2| π -1 解答 JOHA & SARIONFO $0ocslid よって,グラフは図の黒い実線部分。 周期は 2÷12=4 y=cos2 -2 3y=2cos // (0-5) 4 3 327 テー ||3 OT π 2 π y=cose π 2π 15 IN/O! ---- 2 元 10 3 27 (14) AA B →y=2cose ② y=2cosa π 3π y=2cos2/12 (01/28 ) .... ③ (0-7) I I 7 47 π 2 00000 13 LR π 基本140 平 9 ・① い (-2, 0). (. 2). (x, 0), (1, -2). Ⓒy-2cos (1, 0), (13³1, 2) の解放、うる商品 2 P 0の係数でくくる。 五軸との交点や最大・ の周期と同 最小となる点の座標を チェック 229 4章 2 三角関数の性質、グラフ

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