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英語 高校生

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B You are an exchange student in the US and next week your class will go on a day trip. The teacher has provided some information. 問1 Yentonville has 3 a church built 250 years ago when the city was constructed Tours of Yentonville The Yentonville Tourist Office offers three city tours. The History Tour BB [] [ The day will begin with a visit to St. Patrick's Church, which was built when the city was established in the mid-1800s. Opposite the church is the early-20th-century Mayor's House. There will be a tour of the house and its beautiful garden. Finally, cross the city by public bus and visit the Peace Park. Opened soon after World War II, it was the site of many demonstrations in the 1960s. The Arts Tour The morning will be spent in the Yentonville Arts District. We will begin in the Art Gallery where there are many paintings from Europe and the US. After lunch, enjoy a concert across the street at the Bruton Concert Hall before walking a short distance to the Artists' Avenue. This part of the district was developed several years ago when new artists' studios and the nearby Sculpture Park were created. Watch artists at work in their studios and afterwards wander around the park, finding sculptures among the trees. The Sports Tour First thing in the morning, you can watch the Yentonville Lions football team training at their open-air facility in the suburbs. In the afternoon, travel by subway to the Yentonville Hockey Arena, completed last fall. Spend some time in its exhibition hall to learn about the arena's unique design. Finally, enjoy a professional hockey game in the arena. Yentonville Tourist Office, January, 2024 ② a unique football training facility in the center of the town ③ an art studio where visitors can create original works of art 4 an arts area with both an art gallery and a concert hall 2 On all three tours, you will 4 learn about historic events in the city 2 see people demonstrate their skills 3 spend time both indoors and outdoors use public transportation to get around 3 Which is the newest place in Yentonville you can visit on the tours? 5 ①The Hockey Arena The Mayor's House 3 The Peace Park 4 The Sculpture Park

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数学 高校生

解説お願いします。 (2)の問題で、なぜピンクマーカーのように式変形をする必要があるのですか? 変形をせずに微分したりx=1を代入するのはだめなのですか? 教えていただけると嬉しいです。 よろしくお願いします。

次の等式を満たす関数 f(x) と定数 αの値を求めよ。 ((1) * ft)dt = 3x²+x+2 2)f(t)dt = 3x²-ax+1 例題 250 との違い… 等式に定積分を含むのは同じであるが,積分区間に変数xを含む。 → *f(t)dt は, xの関数である。 - f* f (t)dt = [F(t)]* =F(x)-F(a) <-> a Ja xの関数 見方を変える 思考プロセス xで微分するとaff(t) dt = //{F(x)-F(a)}=f(x) = dx. Ss(tdt=0 x=α を代入すると L² f (t) dt = 0 Action» "f(t)dt を含む等式は,xで微分せよ a (1)=(土) ib(1) を使 解 (1) 与式の両辺を xで微分すると, caff(t)dt=f(x)より IbA f(x) = 6x+1 ① 与式にx=a を代入すると,ff(dt=0 より "f(t)dt = 0 を用い AS i 0=3a2+a-2 (3a-2) (a+1)= 0 より 2 るために, 積分区間の下 端のαをxに代入する。 a = -1 3 x (2)与式はf(t)dt-3x+ax-1 ①の両辺をxで微分すると, caff(t)dt=f(x)より f(x)=-6x+a ① に x=1 を代入すると,f(t)dt=0 より 0 = -3+α-1 よって a=4 ② に代入すると f(x)=-6x+4 ・① AS+8 Staff(dt S² ƒ (t) dt = − f² ƒ (t) dt 積分区間の上端と下端が 一致するようなxの値を 代入するより

解決済み 回答数: 1