我想請問這題的D要怎麼算～

CA 關於對數函數的圖形,不列選項哪些是正確的? (A)y=logzx²與y=x的圖形沒有交點 (B) y = log x與y=10*的圖形對稱於y軸 (C)y = log x 與 y=-logx的圖形對稱於x軸 25 5 (D)設a>b>1,則- (logosa+logos b)>logosax logos b 255 30 5 (E) Ba>b>1 log, (a+b)> (log, a+ log, b) , 109-15 2 2.12+1) 10ˇ= x *177

第三題求解🙏🏻

四德年 t logs + logs log 148 a = 4 a logz "+ log3) logo12 b = 22 log="+ log," = log in 4+2=6 21144 272 3/36 -8 3. 十二平均律是一種音樂的定律方式,其中每個音跟下一個音的頻率有著固定的比率, 且每隔12個音頻率將加倍。亦即給定13個連續的音,頻率依序為犬、左、右、、后, \aar ar² za=a la = = fr ₤2 ₤3 在且真=2,則log2. ₤12 f fi 小 ar 1-1 An: a.xlog. a = log. r 2a= axr' 12 2 = y " = log 垊 土 - 8

求講解

b² = y + 1xy = a + b = (ab)²== J. 設正數,q滿足方程式log&p=log&q=logy(2p+q),求9: "let t q 1962p+ P 6=49 6² = 4 x qt. Ans : 2 Bid kodas (B +dejad = % 6 8 = 29

求解🙏🫰

108310g2x <0=10831 2.設方程式9*-kx3x+1+243=0之兩根之積為4,求k之值為 32 -3k·3* + .3-0. 3 10. 將 y=log3x的圖形向右平移2單位,再向下平移3單位,得新函數y=logs (ax+b),求 Tas (x-2)=3 -1082(x-2)-18827 Jasa =195 ±x-2

想問畫螢光筆這兩題為什麼都要=🙇🏻‍♀️🙇🏻‍♀️

2.聲音的強度是用每平方公尺多少特(W/m²)來衡量,一般人能感覺出聲音的最小強度為=10-2 (W/m²);當測得的聲音強度為I(W/m²)時,所產生的噪音分貝數d為d()=10.log -- 50↓ 12 研究發現,人們若處於音量小於50分貝的環境時,會讓人覺得舒適寧靜;反之,若處於音量70 分貝以上的環境時,則可能會使聽力受損,試問 (1) 70分貝的聲音強度是50分貝的聲強度的 (2)50分貝以上的聲音強度至少是 I 150 倍 -7 I (2) 10x log, I 50 -12 10 工 17 10. (0 log 10s 試求:

求解🙏 第一題 謝謝

B. I am a magician. My magic is great and helpful. Allow me to show you what I can do. Here is a photo. You put it in my mouth and push a button. "Abracadabra" I've created ten more of the same photo just like that. You push another button. "Abracadabra" I've sent the photo to your computer and phone screen just like that. And I can do more than that. "Abracadabra" Guess what happened. Your friend just got the photo through an e-mail from me just like that. With modern technology, my magic is growing. Come see me perform more and more tricks. You know where to find me. At schools, offices, and people's houses. DB What might I be in the reading? (A) A camera. (B) A telephone. (C) A drawing tool. (D) A copy machine. (C) 2. What CAN'T the magician do? (A) Send a photo by e-mail. (B) Make copies of a photo. (C) Take a photo of something. (D) Turn a photo into a computer ② magician 魔術師 technology 科技 A

請問這題怎麼寫

2. 設為正實數,且alog3=10,則alog3)2 = D 。(化簡至最簡式)

求講解 謝謝

7. 已知正整數n滿足2”為10位數且最高數字為4,求n= (log 2 0.3010, log 3 ≈ 0.4771) 06020 Ans: AX03010 = 19+06~ 1100 ≤x≤2

這題該怎麼解 想了很久🥹 高二數學

-015229 10 30 10. 010103/0.5229 30= 3& ToQ-2 50. 103 15239 3. 已知a 為logsx+x-2=0之根,B為5*+x-2=0 之根, 則a+B之值為(10)。 SP+B-2202-5 a+α52 29 logs 9=-972 log; B = (+2 log. X=-x+2 5 1095 x = 5 5 x+2 5 4 5+2 +5 7 -8+2

求解！

某天文學家以某一特定的星光強度FO為基準,對於能發出星光強度為F的星體定義為「以 等星」,其中k=-1.7log- F , 已知該天文學家定義北極星為「2等星」,且觀察出某星 Fo 球的星光強度大約是北極星的150倍。依據該天文學家的定義,星球應被定義為幾等 星?(四捨五入到小數點後第一位)( log2≈0.3010,log3~0.4771) Ans: