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English Senior High

空欄にはbが入るのですが、その理由を教えていただけませんか?

次の英文を読み, 後の問いに答えよ。 oh ni ai tuned" goizer o d Beauty is in the eye of the beholder. 1 This proverb was first recorded in the English language in its current form in the 19th century. However, (1). the concept of people viewing beauty differently from their own points of view has been around in most cultures of the world since ancient times. But what exactly is beauty, and is it really subjective? The definition in the Merriam-Webster dictionary is "the qualities in a person or a thing that give pleasure to the senses or the mind." This definition, however, does not mention whether there is a universal standard for beauty, or whether each individual person views beauty based on a totally different set of standards. Some of the arts seem to suggest the (2) if we consider the fact that everybody has their own favorite piece of music or painting that they consider to be beautiful. Nature, on the other hand, consistently comes up with scenes that are universally considered to be beautiful. There is little doubt that physical beauty, or beauty based on physical appearance of people, is personal. The ideal "beautiful woman" differs between cultures, and in many cases is based on fashion. Some cultures appreciate fatness, while others believe that body mutilation 2 represents beau example, body art in the form of piercings and tattoos is recognized as a sign of beauty in many countries of the world today, although there are also many people in these same countries who continue to ( 4 ) with this assessment. (3). For hana including Pythagoras believed that beauty was based on 1:1 11

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Mathematics Senior High

媒介変数表示の曲線の場合に、写真2枚目のθ=0など、 f'(x)=0でないところで値がどうなるかを考えるのはなぜなのでしょうか。また、その値はどのように決めるのでしょうか。 一枚目などの問題では、そのような条件が増減表に示されてないため、考えるときとそうでないときの違いも教... Read More

00000 基本例題 241 定積分で表された関数の最大・最小(1) ~2x≦2のとき、関数f(x)=f'(r)e" dt の最大値・最小値と、そのときの 基本 239,240 の値を求めよ。 指針 dxf.g(t)dt=g(x) を利用すると,導関数f(x) はすぐに求められる。 よって、f(x) の符号を調べ、増減表をかいて最大値・最小値を求める。 なお、極値や定義域の端でのf(x)の値を求めるには、部分積分法により定積分 (1-t)e' dt を計算して, f(x) を積分記号を含まない式に直したものを利用するとよい。 解答 f'(x)=0 とすると x=±1 よって, f(x) の増減表は次のようになる。 -2 -1 1 0 0 極小極大ゝ また S'(x)=&S(1-t)dt=(1-x*)ex 241 x f'(x) ゆえに したがって - f(x)=S+(1-t) (e^*)'dt =[(1-1"erl +2f, te'dt =(1-x*e* 1+2([terl-Serat) f(2)=1-e² ここで, f(-2)<f(1) であり, f(-1) f(2) の値を比較すると =(1-x2)ex-1+2xex-2(ex-1) =(-x²+2x-1)ex+1 =1-(x-1)'ex よってf(-2)=1-123, f(-1)=1-4, f(1)=1, 9 f(-1)-f(2)= e-4>0 e + f(-1)>f(2) x=1で最大値1, x=2で最小値1-² 2 1 から、f(x)の特号 符号と一致する。 部分積分法 (1回目)。 部分積分法(2回目)。 <S²4-[~ I =8²-1 最大・最小 との値をチェック 増減表から、最大値の候補 は (-2), f(1) 最小値の候補はパール から) ∫(x)=e'costdt (OMx2x)の最大値とそのときのxの値を求めよ。 Ian Ca

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