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数学 高校生

数Ⅰ*2次関数 (2)です なぜx=1のとき最大値は-m+7になるのですか? 教えていただきたいです.ˬ.)"

DISNEY 68 第2章 2 Step Up (p.107) 7 (1) αを負の定数とする. 2次関数f(x)=ax²-2ax+b の-2≦x≦2における最大値 0010 (2) 関数y=x2+4x-m+2(-2≦x≦1) の最大値と最小値の和が0のとき,定数の が12, 最小値が−6のとき, α, 値とそのときの最大値、最小値を求めよ. <考え方> (1) グラフは上に凸 (1) y=f(x)=ax²-2ax+b とおく.! y=a(x2-2x)+3 軸は直線 x=1 より, 区間 -2≦x≦2 内にあるので,軸のところで最大値をと り,軸から遠い方の区間の端で最小値をとる.0)=(-x) (1-x) (2) グラフは下に凸 =α{(x-1)²-1}+b =a(x-1)2-a+6 *a<0 より -2≦x≦2 のとき, グラフは右の図 のようになる. したがって, グラフより, x=1のとき最大値をとるから、 軸は直線 x=-2 より,区間 -2≦x≦1の端にあるので,軸のところで最小値 をとり、軸とは反対側の端で最大値をとる. - a+b=12 x=-2のとき最小値をとるから, 8a+b=-6....... ② よって, ①,②を解いて, (2) y=x²+4x-m+2 ×になる. = (x+2)²-m-2343870 より, グラフは右の図のよう グラフより, x=1のとき? ..... よって, このとき 最大値 +7 x=-2のとき, 最小値-m-2 AS M をとる. 最大値と最小値の和が0だから, (-m+7)+(-m-2)=0 m= bの値を求めよ. 9 2 BAY RAJSTOASA 2 12 -2 a=-2,b=10 最小 0 12 9 最大値 12/27(x=1のとき) 最小値 最小 最大9 1 2. ! YA I -6 x=-2のとき) 73024 O 1 1 x 3> x=98 x 08431 SAVO 3624 8:8-09 : 90 FH-HES THE BAT 軸から遠い点ほど yの値が小さい。 α<0 を満たしている. 1983 098 RAIDASTOPAD * 01 2>*>0 ので、絶によ 201

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英語 高校生

教えてください!!

CDisney B ① 英文中の空所に入る適切な語または語句を選択肢から選びなさい。 010 || 1. Brush your teeth after ( eeth after 1 eating 2. He went to Mexico ( 1 to study 04 1 get 5. The school was school was ( ) What in the 5. The 1 due not used ( 2 to eat 7. I'm not 1 get adom Totust erli ni grbhow on A I ski ). begand Ⓒ 3 eat bezols anys 19 ( ) Spanish. Tilwe 3 study JUD() augnot eid diw s19il se gob of guigned 4 studied 2001-90 19200 Having been bow bus 1.) 3. ( ) told the news about the accident, the audience quietly left the theater. 4 Be protected by 2 Been pland 3 Having anges orimot har i sini sevad of going I'm sure of your son () well sooll. Durvives 3 getting 2 gets 2 to studying ) up early. 199 19 3 about ert is completely 6. ( ) with mine, your business plan sounds much better. Comparing 2 To compare 3 Compared griod of 4 being eaten ) bizum o of gainsteil epw 9231 getting bezovo nadinaihettin 4 will get Ito close for financial reasons soil di bacinque son mit ar 2 to nobeTobianos 4 for finished. may adina W () quisbienos gaisbianos ni Ⓒ 054 4 On comparing JJCTOXROX( waited 4 waiting 3 to get eil вnoM4 to getting Erer al <日本 8. The lady ( ) on the slope is Miss Johnson. unlocked 2 to skitotonit 3 skiing que gat 4 skiedmont bophul kids. Dagsfe 2 次の英文の下線部には誤っている箇所が1箇所ある。その番号を選び, 正しい形に直しなさい 。 06 □ 3. その The 1. Seeing from the top of the hill, the cars looked like little ants moving very quickly dict way to gnidesw183) "misma vehaving 2.このソフトウェアの使い方を教えてもらえませんか。 advertaihave may Could you (this /use / how / software / me /to / show)? ing known □ 4. その The LES AC □ 5. 外 understood S 3 次の日本文の意味になるように,( )内の語または語句を並べかえて適切な英文を作りなさい。 auovisn boisgyfn\gailsst indle (e) s ei ois (a walk / you/ what/ going / do / for / to/ say)? closed 1. 散歩に行きませんか。 <西南学院大 <東洋大 6. L C 7. 8.

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英語 高校生

教えてください!!

REG JUSTO ⒸDisney ① 英文中の空所に入る適切な語または語句を選択肢から選びなさい。 1. When I ( ), I want to be a doctor. 1 will grow 2 grew OVAL BIKE CLOT 3. My father ( buying Point 001~ 039 時制,受動態, 助動詞,仮定法 ide bladw noy tallebeicht sw orl Jarbinibigay-alletimid ( 4. You ( A must (1) are 3 grow up do it all over again. 2. If you had the chance to go back in time and fix what you SO MUY you do it? JJE 1 would 2 did ierovinu od 11 (c) successful now..oploT 101 buod too badiate einsbuteretidsvim beli(d). (4) grew up buod 20 201 Seu ) a new eco-car two months ago. eco-car two insidan 2 has bought 3 had bought the and nx what you did wrong i 3 had 4 how bod llwind is of grow a studied ) buy the book. I'll lend you mine. 2 don't 3 need to 5. If you () in my place, what would you have done? are his idleness 2 will be (3 have been li won't blow en 8. If the bank had been open more about the man, 1 can transfer 3 had transferred O must have experienced 3 must had experienced now I \ ni \ a in your life, ( STOR.CO would be 6. I( (TR) that famous painting before at the Museum of Modern Art in New York. 2 had been seen 3 was seen 4 was seeing have seen och Juods wealed U IS001 4 bought <東洋大) suddenly 4 don't have to tea 4 had been YTIOW) I 11() for 389 CAN need ) I 7. Tom's spelling isn't very good. He makes a lot of mistakes when he writes compositions. What do you think he ( ) do? 2 does 3 should 4 would browsillsid Font batoto Mere 48t 1 ton hơi \\n1) until 5 p.m., he ( ) the money abroad. not have 2 could have transferred 4 transferred 9. I ( ) finished cleaning my room by the time my mother returns home. FIND 1 have had [ Doy \ mud) 2 will have 3 had 4 have 3 would do svude Qu 11. "Does your son know how to play a musical instrument?" "No, he doesn't, but I wish he ( )." 1 does 2 had done to 2 must to experience) ali o 4 must experience SS➡030 < 駒澤大 > 021 ➡➡004 <獨協大 10. Mr. Kato's mother was a child during World War II, so she ( ) many hardships at that TO OS time. ➡026 4 did rived earlier. bonielqxs) m'I 022 NR 1 ➡➡030 〈立命館大 > ➡➡004 <日本大〉 □ 12 < 法政大 > ➡033 01 U 2 [

解決済み 回答数: 1