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数学 高校生

(2)に関してです。fxの極限が1+fxになったことで、任意のxで微分可能であるとなぜ言えるのかわからないです.. 微分可能だから極限を取って計算していくのは良いのですが結論何を言えば良いのかわからないです.,

(A)すべての実数xに対して, f(x)> -1 (B) f(0) =1 (C)すべての実数x, yに対して, f(x+y)= f(x)+f(y)+f(x)f(y) (1) f(0)を求めよ。 (2) 関数f(x)はすべてのxで微分可能であることを定義にしたがって示せ.また, f(x)をf(x)を用いて表せ (3) 関数g(x)を g(x)=log{1+f(x)} により定める. g'(x), f(x) をそれぞれ求め よ。 2-48 1)ス=0,-0より (c)を用りて (0+0)=+l0)+(0)+ド(0) 40(Ho) + 1)-0, tx)>-1 より(0)=0 これはH)が仕文のつして 微分可能でト0e) tec)+1て あることを示してリる Lt tec) ノAtは) gは)%=D X+ C 2かける 方f10)-2 t0)> = 0 13). すべての水で 仕文会可能 =>すべてのて Aim toch-ta) Harl イって C-0 4)20afI+ ta) イ+ Hx)- 0x 26 a ath e tけ Lim theth 切 tia) が成立していることをい) えればより。式反れてく、そして(A)~(c) を利用 を利利用 li He)t ti) #Ha)th} l} f1+ Hhar's 関数版だ大こaで連縮、 4la)=lim tx) ニ Jim x めか 数 +x) が =aで従久分可能 下限値ん存在するとぎに 依久 能2すム。そのときの極限 値え十(a)2する コ -tけ)Aim Hhi-t つ0 6-a フミリ |Ha)=)lin lath)-tral h→6. 1 Nal1 利用したい

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英語 高校生

英語 これの答えなんだと思いますか?解いてみたのですが答えがなくて自信がありません。15番の選択肢は①ago ②from now ③past ④in です。 答えだけでかまいませんお願いします🙇‍♀️

A frosty Novemper morning decorates the leafless trees to perfection. When I went up the hill, the white frost was sparkling, and the of milky mist hanging in the air. 6 trees arose on all sides. There were layers The frost has not yet taken to lingering* on the trees in the morning. The air was soon mild. When I went to plant a new tree just received from the nursery*, a gentle moistnes prevailed. Planting trees is pleasant work, encouraging I dug the hole, the soil moved easily beneath the spade, soft and damp. thought about the future, and especially 7 so when conditions are as favorable as this. The weak roots settle 9 into the loam and compost and bone-meal*, pressed into the pit that has been dug; and the infant" thing, little more than a twig, is magnified in the 10 into a handsome and graceful maturity. The village has responded readily 11 the urgings* to plant more trees. In various corners single saplings* are being installed; where more space is available, groups are being planted. A decision as to 12 is not arrived at without much discussion, opinion being split, in general terms, between decorative exoties which put on a great show of blossom and those less showy trees, unfortunately slower in growth, which are more 13 to the village scene. To my relief the latter choice has been preferred. My immediate contribution has been to plant on the grassy edge of the lane which passes my house. 14 there is no room_for anything tall, I chose a white hawthorn*, and as I set it in the earth I could picture it giving pleasure to people who will walk along this lane many years 15 long after I am dead. [注] linger「とどまる」、nursery「苗床」 loam and compost and bone-meal 「黒土(ローム)と堆肥と骨粉」 infant「未発達の」、urging「奨励」、sapling「苗木」、 hawthorn 「セイョウサンザシ」 問6 0 green 2 rich 3 bare fallen 6 問7 0 Below As ③ Though Above 7 間8 0 for 2) dark ③ pessimistic の optimistic 8 問9 0 up hard unresistingly with difficulties 9 問10 0 imagination 2 real ③ future の life 10 問11 0 for ③ to by 11 on 問12 0 the way of planting の what to plant ③ how to plant 0 plant or not 12 問13 の traditional 2 colorful ③ dangerous 0 against 13 問140 If As long as 3 Unless Since 14

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