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Giúp mình với ạ đạo hàm cấp cao

Tìm tập xác định Y = 1 + sinx / cosx

Mn làm gấp giúp em câu này với ạ. Em cảm ơn nhiều

Em hãy vẽ sơ đồ tư duy môn địa lý lớp 8 bài 1

TÍNH a) 25 . 25 = b) 534 . 34 = c) 63 . 33 = d) 321 . 123 = e) 324 . 34 = f) 4 . 12 = g) 86 . 13 = h) 45 . 23 = i) 144 : 12 = k) 55 : 11 : 5 =

e hãy liệt kê những tệ nạn xã hội đang nhức nhối lưu ý ai trả lời trc = ctrlhn

Các bạn giải giúp mình các p/t lượng giác giúp mình với,mình đang cần gấp !! Mình sẽ vote 5 sao cho các bạn!!! ---------------------Cám ơn-----------------------------

Cho hình thang `ABCD (\hat{A}=\hat{D}=90^0)` đường chéo AC và BD vuông góc với nhau. `CMR:``\frac{1}{AD^2}=``\frac{1}{AC^2}+``\frac{1}{BD^2}`

If you enjoy cycling pleasure , doing it in Loan be a shock . there are not ndon cenough lanes especially for bikes and making your way through the traffic can be very risky. But if you have great pasio, cycling in London can be exciting , and it í an inexpensive way of keeping fit if yuo live there . some cyclists don't mind spending a lot of money on expensive bikes . however,if you just want a basic bike that is only for occaasional use, there are many cheap choices. several markets have cheap bikes on sale which may not be impressive to look at but should be satisfactory. you should buy a cycling helmet if you want to cycle in London. wearing a cycling helmet is not compulsory in Britain, but it is a good idea to wear one for protection 1 what is the main idea of the passage A.cycling helmets B. Cheap bicycles C. Bicycle markets D. Cycling in London 2 According to the passage, cyclng in London is A. easy B. difficulf C. tiring D. boring 3The word "it" in line 3 refers to A cycling B passion C. exciement D doing exercise 4 The difficulty of cycling in London is described in lines A 1-2 B 5 C 6 D 7 5 According to the passage, why should you wear a helmet? A It is compulsory B It make you look cute C a helmet is cheap D For fortection