Grade

Type of questions

Mathematics Senior High

この上の問題の最後の最大値の範囲を決める部分なのですが、x=1だったらどっちも同じ距離なので最大値はx=0も2も変わらなく 、0<=a<=1 1<=a<=2に、なるんじゃないのですか?

|2) 1SxS81における関数f(x) = (log.r)· log.(ar)の最小値が-1で (対数関数の置換と2次関数の最大値) 値域を出せばいい。(2) y=f(x) = g(t) とおくと, 文字定数aを含むtの 「ヒントリ(1) t=D1log2x を xの対数関数と考えて, 定義城1sx54より,tの 1) t=Dlogar とおき, tのとり得る値の範囲を求めよ。 不 1Sr34のとき, y= f(x) = (log2x -2a)log;x+2a'がある。 /=log.r とおくとき,tのとり得る値の範囲を求めよ。 講義 難易度 CHECK3 総対階記問題 61 CHECK1 CHECK2 CHECK3 ニものか。 50Sas2のとき、y=Ix) の最大値を求めよ。 講義 条件から、 線y-q= 次関数になる。後は場合分けだ! 解答&解説 0 2 01Sx54より,log21) S (log2x)s(log:4) よって,t=log2x のとり得る値の範囲は, 各辺の底2の対数をとった! 2)を通る 0StS2 .(答) t= log2X 2 2)y=f(x) = g(t) とおくと, リ=g(t) = (t-2a)+2a'=t}-2a.t+2a° リ=(t-a)?+a° (0Sts2) よって, y=g(t) は,頂点(a,a°)の下に凸の放物線。 0/1 4 講義 ここで,0St<2, 0Sa^2より, (i)0Sa<1のとき y=9(t) (i)1Sas2のとき 右図から, (谷) (i)0Sa<1のとき 最大値 g(0) 講義 最大値 =9(t) 最大値 g(2) = 2a' -4a+4 |(i)1<a<2のとき 5 …(答) 9(2) S(x) log.(r+1)+1 0 1a 2 最大値 g(0) = 2a° 出問題にトライ·17 |1sxs81 とする。 S 0 a1 2 CHECK2 CHECK3 難易度 CHECK1 (y=logu) 解答は P243 159 n、、物 多改りンた、し ーでーの |さ腕 2 3 方程式,式と証明 S形と方程式 三角関数 指数関数と対数関数 分法と積分法

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English Junior High

1枚目は文章題をで、残りが問題です。 至急教えて欲しいです お願いします🤲

4 英語クラブに所属するケイ(Kei) が, プラウン先生 (Mr. Brown) や仲間とともに, 地 域に住むノルウェー (Norway) 出身のアーベルさん(Mr. Abel) 宅を訪れて取材しまし た。次の英文は, 英語クラプが発行する英語新聞に載せた記事です。英文を読んで、 J w avab hio sda ai" あとの各問い(問1~問4)に答えなさい。 od booy Yacs aw 3o0ts 注) Mr. Abel is a friend of Mr. Brown's and he is from o D bracers Norway. He came to Japan about ten years ago. One day in afnrrassex August, we visited his house. It was very hot outside. There p oigosyiqmne ntbipd wsn idsrw うsuod were many tall trees around Mr. Abel's house and the wind bo through the trees was a little cool. We were surprised to Vedanon wsa bus_eと iiant dod 0d s bfod ot valw tat eds ai 3et' see Mr. Abel's house, It was a traditional Japanese house. o It was made of *wood and its roof was a *warabuki-yane.。 wood木材 1g * warabuki-yane わらで作 Mr. Abel wvelcomed us. We followed him in his house.We i られた屋根付 おじな : follow(ed) ~の後につい sat on tatami. When I touched the tatami, it was cool. The て行く「k op d .Yob tt s rg.ji ni btog so 7月b.bloo お *sunlight through the * sunlight 日光 d t bs sp2rort was not so strong and it was id うどりばま gi okog oelA beautiful. We had tea and he told us about houses. 89walt hae sasyy n5org Ietonned #u hoot voins ans つになができ Tro sitr ne 1o s02 wokd bona e er t rida Mr. Abel: “Im from Norway. In my country, there are four ) i nobi ail oert seasons like in Japan. But *as you know, it is very cold in od: as you know 知っての通 り winter in my country. Traditional houses in my country *grass on their roofs. Do know why? Cold air in have you *grass 草 t ThoN winter or hot air in summer doesn't *affect you so much * affect ~に影響する when you have grass on the roof of your house. Traditional fetA 1M 1わりonw et houses in Norway are like traditional Japanese houses with Ji bolil od bas n t bad odhg gvBt warabuki-yane and they are nice to live in. So when I found h euot ertS 357 3 ) 1 val Frbi5 od d.bi6 ont or this house, I decided to live in 1t. Of Course, nad o * fix ~を修理する Some parts of this house because it was old, but I like to live in this house. *Natural #building materials like grass o natural /自然の S and wood are useful and they are also good for'vonr haelth pulding materiale) 建築 and the Earth.When people these natural building 1 S use materials for their houses, they don't need so much energy ngae digpetiapa woT tt ot 3 がs せ u tptoy ponaca th3R Itbr. 10 brabye gahuu

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