(2)が下の解答を読んでも分かりません。 特に、求める条件がなぜ①、②になるのか分かりません。 解説お願いします。

すべての実数で成り立つ不等式 CS 例題 79 次の条件を満たすような定数kの値の範囲を求めよ. 野 V (1) すべての実数xに対して, 不等式 x2+kx+k+30 が成り立つ. J (2) 2次不等式 kx²+(k+3)x+k > 0 が解をもたない。 グラフが上に凸か下に凸かを調べ,x軸との位置関係に着目する (8) TO 与えられた2次不等式において, (左辺)=0としたとき の判別式をDとする. (1) 2次関数y=x2+kx+ のグラフが右の図のようになる ときを考えると,求める条件は、 「 (2次の係数)>0 ・① {6² \D=k²-4(k+3) <0.2 ① は成り立つ. XJ 2, k²-4(k+3) <0 k²-4k-12<0 考え方 解答 y=x²+kx+k+3 Med ②より k≦-1.3≦k これと①より, k≦-1 GIST 分身 (k+2)(k-6) <0より。 よって, 求めるんの値の範囲は、 (2) kx2+(k+3)x+k > 0 が解をもたない ⇔ すべてのxで kx²+(k +3)x+k≦0 k=0 次不等式であるから, よって, 求める条件は, 「2次の係数 k<0 ...1 \D=(k+3)²-4k² ≤02 x -1-50+53-16-(8+) -2<k<6_D 2<k<6 (4-08)-³ (0- **** すべての実数で成り 立つ 解はすべての y=kx²+(k+3)x+k x S+ 調べなくてよい. 2次関数のグ ラフは下に凸でx軸 と共有点をもたない ⇒ a > 0, D< 0 2次不等式とあるの でん=0 の場合は |第2 ¥2 (頂点のy座標)≦0 牛 つまり, としてもよ 3(k²-2k-3) -≤0 4k でもよいが計算が煩 雑となるため、Dを 用いる.

272④が誤 なぜgrown upをgrowedに直すのか分かりません。 解説お願い致します🙇‍♀️

□ 272 I was very excited that the Olympics were held in London, ③ where I was born and grown up. - noitertol beon not 〈立命館大〉 → born and growed ☆be born and naised 生まれ育つ Grofla 自 grow up 育つ,成長 @bring up $123 ghow 「○(植物)を育てる」 raise 「O(植物)を育てる」 bring up 「①を育てる (親が子を)

the process of getting to (that) magical point at which one can execute a gymnastics move, play the guitar,or ride a bicycle with ease oc... 続きを読む

仮定法の範囲です！ 6〜21、20、24〜26の答えあってるか確認して欲しいです！不正解の場合正しい回答も教えてくれると助かります🙇‍♂️

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問二の証明中に∠EBI=∠EIBというのがでてきますが理由が分からないです。前回同じ質問をして弧の長さが同じだからと言われましたが見つかりません

5:18 |d Question Mathematics Senior High さy Questions marked as Solved • 4G++ 79% 4 △ABCの内心をⅠ, ∠Aの内部の傍心をⅠとするとき、 次の問いに答えよ。 問二の証明中に∠EBI=∠EIBというのがでてきますが理由が 分からないです IBI の大きさを求めよ。 △ABCの外接円は線分 11, を2等分することを証明 せよ。 No answers. 18 hours ago EDIT 11 お知らせ clearnoteのポリシー変更 Close

TOEICの問題なんですけど、 9.わからない 10.A 11.B 12.C であってますか？

Choose the correct word (1) Richard didn't (A) talked (2) Your presentation (A) attract 10. Do they (A) provide (B) providing 9. The vice president's speech (A) lasts (B) lasting (C) last (D) be lasting (C) provides (D) provision 11. Last year, (A) announces 0 (B) announced the company (B) talk phrase is Part 1 Sentence Completion You will read some sentences. Each one has a space where a word or Choose the best answer to complete the sentence. (C) announcement (D) announcing always (D) were struggled about his work experience at the interview, (B) attracts the audience. 12. According to Mr. Henry, Dell Electronics (A) struggle (B) are struggle © (C) is struggling for 30 minutes. KUA information about their new product? art 2 Text Co ou will read a shor missing. For each Dear Ben, B Thank you ve is already f Thanks. Molly Bro Desmond 13. (A) or (B) h (C) 14. (A) (B (C (J A BCO that it would achieve remarkable cost reduction financially this year. ABCO 15. A B CO

問二の証明中に∠EBI=∠EIBというのがでてきますが理由が分からないです

5:18 |d Question Mathematics Senior High さy Questions marked as Solved • 4G++ 79% 4 △ABCの内心をⅠ, ∠Aの内部の傍心をⅠとするとき、 次の問いに答えよ。 問二の証明中に∠EBI=∠EIBというのがでてきますが理由が 分からないです IBI の大きさを求めよ。 △ABCの外接円は線分 11, を2等分することを証明 せよ。 No answers. 18 hours ago EDIT 11 お知らせ clearnoteのポリシー変更 Close

9.10.11.12の答えとなぜそうなるのかを教えていただきたいですm(_ _)m 例えば、○○の後は△△になるとか

14 9. The vice president's speech (A) lasts (B) lasting (C) last (D) be lasting 10. Do they_WAY (A) provide (B) providing (C) provides (D) provision 1900 11. Last year, the company (A) announces (B) announced (C) announcement (D) announcing information about their new product? for 30 minutes. 12. According to Mr. Henry, Dell Electronics (A) struggle (B) are struggle (C) is struggling (D) were struggled A B A B that it would achieve remarkable cost reductions A B financially this year. A B CD C) (D

BSは夏に乾燥 BWは冬に乾燥するのにどうしてこのグラフはBSで夏に降水量が多くてBWでは冬に降水量があるのですか？しかもどちらの都市も北半球ですよね🥺

88 -00 200 401 30 200 00 00 0 0 m) (°C) 201 10 気温 気温( (°C) 12 [12] [1] 20 10 30.10 11 0 ステップ気候 (BS) ラホール -10 1 47 10(月)|1 H: 214m T: 24.8°C P: 613.7mm 45 ニアメ (BS) 1189 6 8 H: 223m T: 29.6°C P: 508.5mm 10 100 200 (mm) (BS) 699 78 9115 10 砂漠気候 (BW) カイロ 10 H: 116m T: 21.7°C P: 34.6mm 4 4 7 10 (月) リヤド (BW) 11/3 2 12 H: 635m T: 26.6°C P: 139.5mm 100 200 k(mm) -500 400 |300 200 100 0 (mm) (BW) 降水量 気温130 20 10 0 -10

この仮定法の文 if節は仮定法過去っぽいですが、 主節は仮定法過去っぽくてよく分かりません。 過去の話では無いのでhaveが出てくるのが不思議です

PARAGRAPH 6 10トピック 神経組織の働きからは｢経験」そのものを説明することはできない。 The psychol ologists. explained the experience itself! 0 Teol ③ But, (even if you could establish the correlation), you would not have con, even if y ontw S' V' O' S V Colorbyeq UNIT 12 徹底精読 AURRE この文は,まだ実現されていないことを仮定している, 仮定法の構文。 eoneigatorongd inanohib しかし,(たとえ,あなたがこの相関関係を証明することができたとしても)、経験自体を説 明したことにはならないだろう。 after all), aware of neurons firing you are aware of the enoo phics arVIOw C Tol A