Giúp mình câu 9vs10 vs ạ e cảm ơn nhìu
K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Những câu hỏi liên quan
em ko biết hả
HP
29 tháng 7 2021
a, \(f\left(x\right)=2x^4-x^3+4x^2-x\)
\(\Rightarrow f'\left(x\right)=\left(2x^4-x^3+4x^2-x\right)'\)
\(=\left(2x^4\right)'-\left(x^3\right)'+\left(4x^2\right)'-\left(x\right)'\)
\(=2.4x^3-3x^2+4.2x-1\)
\(=8x^3-3x^2+8x-1\)
b, \(f\left(x\right)=2sinx\)
\(\Rightarrow f'\left(x\right)=\left(2sinx\right)'=2cosx\)
c, \(f\left(x\right)=\dfrac{3x^2+2x-5}{x}\)
\(\Rightarrow f'\left(x\right)=\left(\dfrac{3x^2+2x-5}{x}\right)'\)
\(=\left(3x+2-\dfrac{5}{x}\right)'\)
\(=\left(3x\right)'+\left(2\right)'-\left(\dfrac{5}{x}\right)'\)
\(=3+0+\dfrac{5}{x^2}=\dfrac{5}{x^2}+3\)
2 tháng 1 2022
1, The homework is too difficult for him to do
2, The homework isn't easy enough for him to do
3, The homework is so difficult that he can't do it
4, It is such difficult homework that he can't do it
DT
7 tháng 1 2022
1. My sister says she went to school by bus this morning.
My sister said she had gone to school by bus that morning.
2. Nga says she have done her homework.
Nga said she had done her homework.
7 tháng 1 2022
1, My sister says that she goes to school by bus this morning
My sister said that she had gone to school by bus this morning
2, Nga says that she have done her homework
Nga said that she had done her homework
Mn giúp e bài này vs ạ , e cảm ơn nhìu ạ!
3 tháng 3 2022
1. many -> much
2. a apple -> an apple
3. Theirs -> Their
4. ???
5. visiting -> to visit
6. were -> was
PL
1
DT
24 tháng 12 2021
1.........................................
=>the computer hasn't been fixed by them yet
2.......................................
=>Last night I was helped by a stranger.
Mọi người giúp mình với mình đang cần gấp mình cảm ơn nhiều ạ