この問題の解答についてなのですが、座標を有理化する必要が無いのはなぜですか？

Ø187円 x2+y2=5の接線が直線3x+y=-2に垂直であるとき その接線の方 程式と接点の座標を求めよ。

画像は分詞を使った慣用表現なのですが、上2つが修飾してるのは主語で、3番目が時間、4番目がoneselfで合ってますか？

分詞を使った慣用表現 keep (on) Ving : Vし続ける be busy (in) Ving 忙しくVする spend 時間 (in) Ving : Vして時間を過ごす make oneself understood 理解してもらう

最後の文のwhat value is B(smellが入ります)の文構造を教えて頂きたいです。よろしくお願いします。

they can s example, follow coastlines and thr When they get very close 4 Mont to where they want to be, many use their sense of smell. anger as Homing pigeons give a clue to this. ("Homing" is not the same as migration. It suggests that pigeons can find their way home when taken by train or truck to some far-distant place and then released. But homing surely has some of the same mechanisms; migration does, and so can give clues to how it works.) It seems that as pigeons get fairly close to their home, they first pick up general smells that tell of bird dwellings-perhaps the general tempting stink of ammonia. As they get nearer, the smells become more specifically pigeon-like. Finally, as they get very close, they recognize the very particular odor of their own flock in its own space. More and more evidence is revealing that humans, too, have a wonderful awareness of odor, even if they do not consciously recognize it, such that they find particular men or women attractive or disgusting according to their primitive substances such as sweat no doubt a cooling thought for human beings have risen above such things. We do not those who like to suppose that (2) normally think of birds as creatures that attach importance to smell, but many of them 。 do, in many contexts. 112055見る形 137. ho doubt, but なるほしだが、 But what use are A clues when a bird is above some apparently boundless ocean? What value is (B) when it is a thousand miles from where it wants to be? What else is there? O is value. air force, havy, army. doy and the moon

For example〜 with small children.の文の訳し方が分かりません。訳を教えてください🙇‍♀️

around them)/ is essential for their language development. // For example,/ caregivers often use a clearer, simplified) form of speech (called "baby talk) to interact with small children// A large-scale study / conducted across cultures (v) S and continents / has shown that babies respond better / to baby talk / than to

丸で囲った部分はどこから出てきたんですか？

例題 2.2 2次元極座標系では、 図2.10のように直線 OP 方向を方向,それに垂直な方向を 0 方向と呼 び,それぞれの方向の単位ベクトル er, ee を基 本ベクトルにとる。 これらの基本ベクトルはP の位置が変わると方向が変わるため時間的に変動 2次元極座標と円運動 [9] 方向 y ee P 方向 er To O ・T する. (1)ere の時間変化について der de dee do ee, dt dt dt er == dt (2.33) 図 2.10 が成り立つことを示せ. (2) 等速でない円運動の場合について,質点P の加速度αの成分および 0成分を求めよ. 笑 合 (1) 2つの極座標基本ベクトルを直交座標基本ベクトルを用いて表すと er= cosQi+ sin Oj ee = - sin0i+ cos0j dt したがって der de do (-sin 0 i + cos 0 j) = = -ee dt dt dee de de dt となり (233) が導かれる. at(coshi+sinoj) = -er dt r = rer である. 円運動の場合は (2)2次元極座標での位置ベクトルの表示は r dr/dt=0であるから, 速度ベクトル, 加速度ベクトルは極座標成分で表すと dr der de となる. 2= =r =r dt dt eer dt dv do dea a² 0 a= =r T dt dt dt dt2 2 do d² ==r er+r. dt dt2 ee

高校生物基礎です。真核生物と原核生物の違いに、細胞内にタンパク質を含むか含まないかというのがあるのですが、どういうことでしょうか。

解説見てもなんでこうなるのかが分かりません あとたすきがけ？もよくわかりません 教えてくださいお願いします🙏

3 次の式を因数分解せよ。 (1) (x-4)(3x+1)+10 【解説】 (x-4)(3x+1)+10-3x²-11x-4+10 -3- -9 -3x²-11x+6 -2- -2 (x-3x3x-2) 3 6 -11

空欄の答えがtoだったのですがなぜwithではないのですか？教えて頂きたいです🙇‍♀️🙇‍♀️

に答えなさい。 当てはまる単語を下の語群から選び、 ア~ よいものとする。 n explorers who followed him looked up It may have been a "new" and unkno le already living there - the Native Ame ple were living in North America and S The central Mexican highland, center people, compared ( 3 ) fewer than native peoples spoke some 1,200 se rent systems of writing, devised calen observatories from which they tracke ca, European explorers and settlers insistence on personal liberty and soc ader in colonial New York, people in as they were in Europe. Every mer d the right to deprive others ( 7 ) ation. と tion

この英語長文において、印刷技術の発達に必要な技術はどのようなものであるか50~200字で答えてください

木版画 鋳造 第3問 以下の文は、 S. Strandh の “Machines, an illustrated history" からの抜粋で ある。 次の文を読んで、設問に解答せよ。 (ア) The tools of precision mechanics were, without doubt, the technical pre conditions for making wood cuts and for the development of printing. The oldest dated wood engraving is from 1418. It shows fine lines throughout 細部 and a richness of detal, which imply that the tools used, the knives, burins, and so on, must have been eminently suitable At this time, it was only the precision mechanics of clock making which could achieve the technique required for such tools. 精密機械技術 (イ) A (woodcut was produced by transferring a drawing, reversed from left to right, onto a carefully surface-ground "block" of wood, after which the surface wood on either side of each line in the drawing was cut away with a burin of forged steel. The remaining wood on all 'surfaces which were to be white in the drawing were then cut away with gravers and gouges, so that the lines of the drawing became raised. They were then inked and pressed against paper. これは 理由では ないから、 (~のときに、何 が原因か は不明) The woodcut method spread rapidly in the late Middle Ages when pictures were rarity. At first, skilful craftsmen made the woodcuts, but before long, eminent artists were themselves cutting their own drawings in wood. One of the first was the German Albrecht Duerer (1479-1528) who, in 1498, published the famous pictorial series of the Revelation of St. John. Graphics had become an independent art form-based on the progress of precision 酒の mechanics! 可動式の The 1440s saw the first book printed with movable die-cast type. (The letter press printing method used by Johann Gutenberg (1399?-1468) was basically the same as the one used for printing woodcuts, but Gutenberg used cast, movable type instead of cut blocks. The production of dies for the type was made possible by the tools of precision mechanics, too. It does not detract from Gutenberg's contribution that printing with movable type has been practised in the Far East, or more specifically Korea, two thousand years prior to this. Several of the techniques described here, which developed so quickly during the technical revolution of the Renaissance, had had predecessors in other parts of the world. ' 金楼 にねじ を刻む 道具 ~をなら K あったもの

These days, many enterprising Japanese businesses are finding it profitable to reimport goods made in Japan. Many technical products ar... 続きを読む