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chuyên cac danh tu sau sang so nhieu
1.an egg -> eggs
2.a car -> cars
3.a car -> cars 10.a tomato -> tomatoes
4.an orange -> oranges 11.a leaf -> leaves
5.a house -> houses 12.a wife -> wives
6.a student -> students 13.a country -> countries
7.a class -> classes 14.a policeman -> policemen
8.a box -> boxes 15.a bamboo -> bamboos
9.a watch -> watches 16.an goose -> geese
chuyên cac danh tu sau sang so nhieu
1.an egg ->.....eggs.........
2.a car ->........cars........
3.a car ->............... 10.a tomato ->....tomatoes............
4.an orange ->.......oranges..... 11.a leaf ->.........leave......
5.a house ->.........houses....... 12.a wife ->....wives............
6.a student ->.........students........... 13.a country ->.....countries........
7.a class ->.........classes......... 14.a policeman ->.......policemen....
8.a box ->........boxes........ 15.a bamboo ->..........bamboo........
9.a watch ->.....watches....... 16.an goose ->.........geese..........
1. Beauty (n) => beautiful (a) => beautifully (adv).
2. Curl (n) => .Curly.. (a).
3. Social (n) => ... (a). (social là tính từ rồi :v)
4. Differ (v) => different (a) => ..difference. (n).
5. Luck (n) => lucky (a) => .Luckily.. (adv) => unlucky (a) => ..unluckily. (adv).
6. Extreme (a) => ..Extremely. (adv).
7. Kind (a) => ..Kindly. (adv).
8. Reserve (v) => .reservative .. (a).
9. Orphan (n) => ..Orphanage. (n).
10. Peace (n) => .Peaceful.. (a).
11. Humor (n) => ..Humorous. (a) => sense of ..Humor . (n).
12.Love (v) => .lovely.. (a).
13.Friend (n) => .friendly. (a) => friendliness (n).
14. Happy (a) => .happily.. (adv) => ..Happiness. (n).
15. Help (v) => ..Helpful. (a).
Chứng minh rằng: \(\sqrt{a^2+\sqrt{a^2+\sqrt{a^2+...+\sqrt{a^2}}}}< \left|a\right|+1\) với \(n\in\)Z
cot a= 1/tan a => cot a bn tự tí́nh nha
câu b đề là j z bn?
:
a)
\(\dfrac{5}{6}< \dfrac{7}{6}\)
\(2=\dfrac{6}{3}\)
\(\dfrac{3}{7}>\dfrac{4}{14}\) (vì \(\dfrac{4}{14}=\dfrac{2}{7}\))
\(\dfrac{12}{20}< \dfrac{4}{5}\) (vì \(\dfrac{12}{20}=\dfrac{3}{5}\))
b)
\(\dfrac{1}{13}=\dfrac{3}{39};\dfrac{25}{13}=\dfrac{75}{39}\)
\(\dfrac{75}{39}>\dfrac{4}{39}>\dfrac{3}{39}\rightarrow\dfrac{75}{39},\dfrac{4}{39},\dfrac{3}{39}\)
---------
\(\dfrac{2}{8}=\dfrac{4}{16};\dfrac{7}{4}=\dfrac{28}{16}\)
\(\dfrac{28}{16}>\dfrac{9}{16}>\dfrac{4}{16}\rightarrow\dfrac{28}{16},\dfrac{9}{16},\dfrac{4}{16}\)