題庫堂
檢索
題庫堂
首頁
數學
英文學習
政治學
統計學
經濟學
藥理學
中醫藥物學
財政學
法學知識
公共行政
警察學
BI規劃師
財務管理
公共衛生學
工程經濟學
電力電子學
當前位置:
首頁
5.設x> 0,y>0 , x+y=6,則xy2之最大值為何? (A)16 (B) 18 (C) 25 (D)32
問題詳情
5.設x> 0,y>0 , x+y=6,則xy2之最大值為何?
(A)16
(B) 18
(C) 25
(D)32
參考答案
答案:D
難度:
計算中
-1
書單:
沒有書單,新增
上一篇 :
4.不等式x2 - 3x - 4 < 0的解為 (A)1 < x < 4 (B)-4 < x < -1 (C)-1 < x < 4 (D)-4 < x
下一篇 :
6.設 的解為a與b,則a + b = (A) (B)4 (C) (D)
資訊推薦
7.若x、y、z為實數,且x2 + y2 + z2 = 4,則x + y + z的最大值為 (A)2√2 (B) 2√3 (C)4 (D)√5
2. Little Eddie wants to be a good husband when he_____ up .(A)grew (B)grow(C) is growing (D) grows
3. Uncle Ben showed a magic card_____ the kids.They loved it and learned some magic rules.(A)to (B)o
4. Steve: Chinese New Year is coming. Do you _____ totake a trip with your family?Tracy: Of course.(
5. I’m not good _____Chinese, but I still listen theteacher in class, finish homework on time and st
6. My mother could not sleep well last night. She had ahigh fever. She_____ up four to five times a
7. Thank you, Amy. I’m happy I went to the Jay’sconcert with you and I _____ a good time.(A)do (B)wa
8. Let me make a chocolate pie _____you and thankyou.(A)to (B)for (C) in (D) X
9. Elsa: Is my worksheet the same_____ Anna’s?Olaf: No, your worksheet is different from Anna’s.(A)a
10. Who_____ you with and how did you make apomelo hats last weekend?(A)did (B)were (C) was (D) do
11. They didn’t have a picnic at the park the day beforeyesterday because of_____ .(A)it rained (B)t
12. Richard: I bought him a new school bag. Did yougive it _____?Jenny: You bet.(A)to him (B)him(C)
13. My cousin put her coat on the chair and_____out for the dinner with her friends.(A)go (B)goes (C
【題組】2. (A)all (B)both (C) many (D) much
【題組】3. (A)Someday (B)Right away(C) In the past (D) Moonlight
【題組】4. (A)planned (B)enjoyed(C) plan (D) enjoy
【題組】5. (A)to (B)for (C) with (D) about
【題組】2. Why doesn’t Taylor love Rocky?(A) Taylor loves the new man.(B) Rocky loves the new woman.(C)
【題組】3. Which is true?(A) Rocky is Selena’s friend.(B) Taylor loved Rocky at the first time she saw h
8.解 ,則x + y - z = (A) - 1 (B) (C) (D)1
【題組】5. Woody has a reunion dinner with his family on theChinese New Year. What will he usually get f
【題組】6. Which is true?(A) People set up eggs on the Moon Festival.(B) People go to bed late to rememb
【題組】8. How long did the people in the study play videogames?(A) Ten minutes every hour.(B) Fifteen m
【題組】9. According to the article, which is better for you?(A) Studying. (B) Running.(C) Sleeping. (D)
【題組】10. What does people NOT say about playing videogames?(A) It hurts how you do in class and on te