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English Senior High

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26. Be confident. You don't have to feel inferior ( ) anyone in the contest. 1 to 2 in 3 than 27. I prefer talking with Mary over the telephone ( 1 in 2 of 3 on A is inferior to B BよりAが劣っている <東北福祉大〉 ④against ) writing her a letter. prefer A to B BよりもAを好む 〈関西外国語大〉 ④to 28. The dinner we had at Betty's is one of the best we have ( The fet B b S have ever done ) had. Sが今まで~した<近畿大〉 4 often 中で最も…な名詞) 1 already (2 ever 29. This city is the third ( ①largest ③ never ) in France. the third 2 large IB 30 3 larger 4 to large 30. When the president was seated, the waiter offered him the]( much the 1 much ならOK 2 very 31. I think he is ( ⑩by far 2 many 3 by far by far the more ならOK ..M 〈神奈川工科大 > the very B 最上級 ) best wine. 最上級の強調 〈名古屋工業大〉 )[the most talented baseball player today. by far the ±AB 3 as far as → 最上級の強風和光大〉 4 very 32. Professor Jones is stricter than (r() teacher in our department. Dany other 16 比較 A is te than any other 単数名詞 Aは他のどんな名詞 ④ one another よりも~だ〈南山大〉 is tt Than A AZY~360]) 127211 2 2 other 3 each other 33. ( ) in Japan is greater than he. No other ①No more politician No other politician 7. 3 No less politician No another politician Lotally 〈福岡大〉 34. "How is New York different from other cities?" A is te than anywhere else "Well, I think it is so much more exciting than ( ) else." 他のどんな場所よりも ①any other place 2 anywhere ~ Tell 3 nowhere wherever <学習院大 >

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English Senior High

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Danas rare rare as 原級 今までにないほど 10. Elizabeth is as great a pianist as ( ) lived. as B as ever lived low ever 1 any w nad porge od of S 3 never 11. Since reopening on July 25, the lodge is visited by ( 1 no more 2 the number of 3 as many as 4 some 〈日本大〉 ai buclei insofov ller as many as A ) 60 guests a day. At 可算 mo 4 as much as 数が多 そう 12. As ( as the 15th century Leonardo da Vinci dreamed of a flying machine. 1 long 2 much 3 many 13. Most people think that the climate of Tokyo is ( ③ mildest <桜美林大〉 as early as 早くもAに get〈東京理科大〉 to A than B up ④early ) than that of Akita. 4 mild 〈 秋田県立大 〉 ⑩milder 2 most mild 14. He came here ( ) than usual. 1 late 2 later (3 latter 4 so late <東京理科大 〉 aited 15. Participating in the competition is ( ) more important than winning. muchを比較級の 1 further 2 like 3 much ④ very←比較解を 〈北里大〉 強調できない 16. This dress is ( ) than that one. A less TAAR than B A 17 B17ε"~7011 原級 BAはBほど~ない学業大) ① as expensive 3 a little expensive = not as AB as B 2 most expensive 17. My uncle is ( ) than intelligent. 1 wise 2 wiser 18. This rope is about three times ( 2 as long as 1 longest 4 less expensive 〈名古屋経済大〉 more ACT&B) than B(TR) B 2412 A 3 wisest ) than that one. 3 long diablo 9 4 more wise 大人 〈東京家政学院大〉 A倍数比較級 thanBAはBの~倍 =A倍数as原級as =A 1548 as TRAR as Blo (④longer to les as gru 〈女子美術大〉

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Mathematics Senior High

(ii)を私は(i)と同様に等号の下に=を付けず、(iii)で私は1/a=1/4の時とやったのですがこれは間違いですか?また何故(ii)の下に等号があるのですか?

258 第4章 三角関数 Think 132 三角関数の最大・最小 (1) 次の問いに答えよ。 **** (1) 058-2 のとき、y=cos'0-2sin 0-1 の最大値、最小値を 求めよ、 (2) 関数 y=2cosasin' は定数) において 0 が ISIS 2 の範囲で動くとき, yの最小値を求めよ、ただし, a<0 とする. (立命館大改) 考え方 例題 130 (p.255) と同様に、まずは三角関数の種類を統一する。 解答 sind や cose を とおくと、関数yは1の2次式で表すことができる。 0 の範囲に注意してtの値の範囲を考える. (1) 与えられた式に cos'01-sin' 0 を代入すると y=-(1-sin°0)-2sin0-1 与えられた式に sin'0=1-cos' を代入すると、 y=2costa(1-cos') =acos' 0+2coso-a 2 2 いろいろな角の三角関数 259 03=1とおくとより、-12S11であり、 y=af+2t-a tar+2t-a とすると,040 より f(t)=a(t+1) a a y=f(t) のグラフは、袖の方程式 (0) で、 上に凸の放物線である。=100 741020 a 1/2sts1 の中央は、t=1である。 1のとき また、 (i) ここで,sin0=t とおくと,002 より a であり。 文字でおくときは、そ ao より >=sin²0-2sin 0-2 の文字のとる範囲 注意する。 a<-4 f(t) の最小値は, _m=f(1)=2 文字でおくときは、そ の文字のとる値の範囲 に注意する。 y=f-2t-2 =(t-1)2-3 したがって, 1st≦1 において, 1-1のとき、最大値1 t=1 のとき 最小値-3 ここで, t=-1. すなわち, sin0=-1 のとき, 3 0= 002mより02/23 t=1, すなわち, sin0=1 のとき, 002 より 0= 2 1 のとき a ao より (f)の最小値は -4≤a<0 3 m=fl m= 2 3 a- (a<-4) Ca-1 (-1sa<0) (ii) 72 よって、0=2のとき最大値1 B=1のとき、最小値-3 Focus sin / と cos を含む式の最大最小では、 三角関数の種類を統 一してから、文字でおき換える 4a

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