Tại sao hàm số y=sin(ax+b) tuần hoàn với chu kì 2pi/|a| ????

PRACTICE Fill in the blank with the comparative forms of the given words. Điền dạng so sánh hơn của từ đã cho vào chỗ trống. Fast Early Badly Happily Expensive Polluted Hard successfully Choose the correct options. (Chọn câu trả lời đúng.) 1. The city people are (worried more/ worrieder/ more worried) about crime than the countryside ones. 2. In the UK, there are (more / many / more many) people tending to leave urban areas for the countryside. 3. Living in (greener / more green / more greener) spaces and having the sense of community make people in the rural regions (more happily/ more happy /happier). 4. People in both rural and urban areas think (more optimistically/ more optimistic / optimisticallier) about education and health care. Reorder the words/ phrases to make complete sentences. Sắp xếp các (cụm) từ để tạo thành câu hoàn chỉnh. 1. the / up / countryside / People / in / earlier. / often / wake / living ………………………………………………………………………………………………………………………. 2. countryside, / in / you / wait / the / have to / longer for the bus. ……………………………………………………………………………………………………………………. 3. in the city. / People / than / clearly / in the countryside / know each other / more / ones …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………… 4. those / are / in the city / richer / People / in the countryside./ usually / and go travelling / more often / than …………………………………………………………………………………………………………………….. …………………………………………………………………………………………………………………….

d. a ( b + c )^2 ( b - c ) + b ( c + a )^2 (c - a ) + c ( a + b )^2 (a - b ) e. a ( b + c )^3 + b ( c - a )^3 + c ( a - b )^3 f. a^2 b^2 ( a - b ) + b^2 c^2 ( b - c ) + c^2 a^2 ( c - a ) g. a ( b^2 + c ^2) + b ( c^2 + a^2 ) + c ( a^2 + b^2 ) - 2abc - a^3 - b^3 - c^3 h. a^4 ( b - c ) + b^4 ( c - a ) + c^4 ( a - b )

Một dây dẫn bằng $nikêlin$ có chiều dài $100m$ , tiết diện $0,5mm²$ được mắc vào nguồn điện có hiệu điện thế $120V$ $.$ 1/ Tính điện trở của dây. 2/ Tính cường độ dòng điện qua dây. [ TẶNG QUÀ 5 SAO NHA ]

Giải thích chi tiết giúp mình nhé ^^

Chỉ cần câu chả lời thôi nha mọi người

Giúp mình ba bài này mình cần gấp và cho mình cảm ơn

(x^4 - x^3 - 3x^2 + x + 2) ÷ ( x^2 + 1)

1.I have been in ___________with the school for nearly a year about this. (correspond) 2.The work has been ______________ into smaller sections. (divide) English is ______________ at my school but art and music are ______________. (compel / option) 3.They proposed making secondary education ______________ up to the age of 18. (compel) 4.I would like to see her playing her instrument for her own ______________ not as a chore. (enjoy) 5. I need someone ______________ to take care of my children while I’m at work. (depend) 6.The law now require the ______________ of garbage that can be recycled such as newspaper and glass 7.bottles. (separate) 8.The churches were built to ______________ God. (worshipping) 9.At 11 a.m ______________ began to stream out of the Cathredral. (worship)

2 A3—= 5 4 B1—= 7 3 C2– 4 1 D1– 6