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1. I'll never forget the place.....i first met you A.at where B.where C.at which D.on which 2. They asked me a lot of questions, ....i couldn't answer A.most of which B.of which most C.most of that D.of that most 3. That is the house in.....i used to live A.that B.which C.where D.there 4. The......is my teacher A.who she is speaking to B.whom she is speaking with C.to whom she is speaking D.to whom she is speaking with 5. My friend, Jack, .....parents live in glasgow,...
Đọc tiếp

1. I'll never forget the place.....i first met you

A.at where

B.where

C.at which

D.on which

2. They asked me a lot of questions, ....i couldn't answer

A.most of which

B.of which most

C.most of that

D.of that most

3. That is the house in.....i used to live

A.that

B.which

C.where

D.there

4. The......is my teacher

A.who she is speaking to

B.whom she is speaking with

C.to whom she is speaking

D.to whom she is speaking with

5. My friend, Jack, .....parents live in glasgow, invited me to spend Christmas in Scotland

A.that

B.whose

C.where

D.who

6. Here's the computer program....i told you about

A.that

B.whose

C.where

D.who

7. I don't believe the story....she told us

A.that

B.whose

C.∅

D. A, B &C

8. Peter comes from Witney, ..... is near Oxford

A.what

B.which

C.where

D.who

9. This is the gun with......the murder was committed

A. That

B.whose

C.which

D.who

10. Is this the person.... you asked me about

A.that

B.whose

C.where

D.who

11. Have you received the parcel....we sent you?

A.it

B.whose

C.where

D.which

12. That's the girl .....brother sits next to me

A.that

B.whose

C.where

D.whom

13. The meal, .....wasn't very tasty, was expensive

A.that

B.which

C.where

D.whose

14. We didn't enjoy the play.....we went to see

A.what

B.whose

C.where

D.∅

15. She gives her children everything.....they want

A.that

B.whose

C.where

D.who

3
14 tháng 6 2019

1. I'll never forget the place.....i first met you

A.at where

B.where

C.at which

D.on which

2. They asked me a lot of questions, ....i couldn't answer

A.most of which

B.of which most

C.most of that

D.of that most

3. That is the house in.....i used to live

A.that

B.which

C.where

D.there

4. The......is my teacher

A.who she is speaking to

B.whom she is speaking with

C.to whom she is speaking

D.to whom she is speaking with

5. My friend, Jack, .....parents live in glasgow, invited me to spend Christmas in Scotland

A.that

B.whose

C.where

D.who

6. Here's the computer program....i told you about

A.that

B.whose

C.where

D.who

7. I don't believe the story....she told us

A.that

B.whose

C.∅

D. A, B &C

8. Peter comes from Witney, ..... is near Oxford

A.what

B.which

C.where

D.who

9. This is the gun with......the murder was committed

A. That

B.whose

C.which

D.who

10. Is this the person.... you asked me about

A.that

B.whose

C.where

D.who

11. Have you received the parcel....we sent you?

A.it

B.whose

C.where

D.which

12. That's the girl .....brother sits next to me

A.that

B.whose

C.where

D.whom

13. The meal, .....wasn't very tasty, was expensive

A.that

B.which

C.where

D.whose

14. We didn't enjoy the play.....we went to see

A.what

B.whose

C.where

D.∅

15. She gives her children everything.....they want

A.that

B.whose

C.where

D.who

14 tháng 6 2019

1. I'll never forget the place.....i first met you

A.at where

B.where

C.at which

D.on which

2. They asked me a lot of questions, ....i couldn't answer

A.most of which

B.of which most

C.most of that

D.of that most

3. That is the house in.....i used to live

A.that

B.which

C.where

D.there

4. The......is my teacher

A.who she is speaking to

B.whom she is speaking with

C.to whom she is speaking

D.to whom she is speaking with

5. My friend, Jack, .....parents live in glasgow, invited me to spend Christmas in Scotland

A.that

B.whose

C.where

D.who

6. Here's the computer program....i told you about

A.that

B.whose

C.where

D.who

7. I don't believe the story....she told us

A.that

B.whose

C.∅

D. A, B &C

8. Peter comes from Witney, ..... is near Oxford

A.what

B.which

C.where

D.who

9. This is the gun with......the murder was committed

A. That

B.whose

C.which

D.who

10. Is this the person.... you asked me about

A.that

B.whose

C.where

D.who

11. Have you received the parcel....we sent you?

A.it

B.whose

C.where

D.which

12. That's the girl .....brother sits next to me

A.that

B.whose

C.where

D.whom

13. The meal, .....wasn't very tasty, was expensive

A.that

B.which

C.where

D.whose

14. We didn't enjoy the play.....we went to see

A.what

B.whose

C.where

D.∅

15. She gives her children everything.....they want

A.that

B.whose

C.where

D.who

13 tháng 12 2017

\(\dfrac{1}{1-x}\)+\(\dfrac{1}{1+x}\)+\(\dfrac{2}{1+x^2}\)+\(\dfrac{4}{1+x^4}\)+\(\dfrac{8}{1+x^8}\)+\(\dfrac{16}{1+x^{16}}\)

=

=\(\dfrac{4}{1-x^4}\)+\(\dfrac{4}{1+x^4}\)+\(\dfrac{8}{1+x^8}\)+\(\dfrac{16}{1+x^{16}}\)

=\(\dfrac{8}{1-x^8}\)+\(\dfrac{8}{1+x^8}\)+\(\dfrac{16}{1+x^{16}}\)

=\(\dfrac{16}{1-x^{16}}\)+\(\dfrac{16}{1+x^{16}}\)

=\(\dfrac{32}{1-x^{32}}\)

8 tháng 8 2015

a) Ta có I 2x - 1 I = 2015

=> 2x-1=2015 hoặc 2x-1=2015

+,Th1: 2x-1=2015

             2x=2015+1

             2x=2016

              x=2016:2

             x=1008

+,Th2: 2x-1=-2015

              2x=-2015+1

             2x=-2014

              x=-2014:2

             x=-1007

Vậy x=1008, x=-1007

 

 

|x-1|<5

th1: x-1<5=> x<6

th2: x-1<-5=> x<-4

vậy x <6 hoặc<-4

|x-1|>5 cũng tương tự như thế

còn mấy câu khác Nguyễn Diệu Thảo làm thế chắc bạn cũng biết cách làm rồi

L_I_K_E CHO MÌNH NHA!!!

a) Chương trình bị lỗi

b) Chương trình bị lỗi

c) Chương trình bị lỗi luôn

26 tháng 7 2019

I I  là dấu giá trị tuyệt đối nhé

26 tháng 7 2019

|7 + 5x| = 1 - 4x

=> \(\orbr{\begin{cases}7+5x=1-4x\left(đk:x\le\frac{1}{4}\right)\\7+5x=4x-1\left(đk:x\ge\frac{1}{4}\right)\end{cases}}\)

=> \(\orbr{\begin{cases}7-1=-4x-5x\\7+1=4x-5x\end{cases}}\)

=> \(\orbr{\begin{cases}6=-9x\\8=-x\end{cases}}\)

=> \(\orbr{\begin{cases}x=-\frac{2}{3}\left(tm\right)\\x=-8\left(ktm\right)\end{cases}}\)

|4x- 2x| + 1 = 2x

=> |4x2 - 2x| = 2x - 1

=> \(\orbr{\begin{cases}4x^2-2x=2x-1\left(đk:x\ge\frac{1}{2}\right)\\4x^2-2x=1-2x\left(đk:x\le\frac{1}{2}\right)\end{cases}}\)

=> \(\orbr{\begin{cases}4x^2-2x-2x+1=0\\4x^2-2x-1+2x=0\end{cases}}\)

=> \(\orbr{\begin{cases}\left(2x-1\right)^2=0\\4x^2-1=0\end{cases}}\)

=> \(\orbr{\begin{cases}2x-1=0\\x^2=\frac{1}{4}\end{cases}}\)

=> \(\orbr{\begin{cases}x=\frac{1}{2}\\x=\pm\frac{1}{2}\end{cases}}\)(tm)

Vậy ...

31 tháng 8 2023

???

6 tháng 4 2019

#It's the moment when you're in good mood, you accidentally click back =.=

1) Calculate

\(P=1\frac{1}{3}.1\frac{1}{8}.1\frac{1}{15}....1\frac{1}{63}.1\frac{1}{80}\)

\(=\frac{4}{3}.\frac{9}{8}.\frac{16}{15}....\frac{64}{63}.\frac{81}{80}\)

\(=\frac{2.2}{1.3}.\frac{3.3}{2.4}.\frac{4.4}{3.5}....\frac{8.8}{7.9}.\frac{9.9}{8.10}\)

\(=\frac{2.9}{10}=\frac{9}{5}\)

7 tháng 8 2019

ta có: 10010 + 1 > 10010 - 1

⇒ A = \(\frac{100^{10}+1}{100^{10}-1}< \frac{100^{10}+1-2}{100^{10}-1-2}=\frac{100^{10}-1}{100^{10}-3}=B\)

vậy A < B

19 tháng 12 2015

a) |2x +1| = 7

Th1: 2x + 1 = 7 

<=> x  = 3

Th2: 2x + 1 = -7 

<=> x = -4 

15 tháng 6 2018

\(1)\) Ta có : 

\(\left|2x-1\right|\ge0\)

\(\Leftrightarrow\)\(A=\left|2x-1\right|+8\ge8\)

Dấu "=" xảy ra \(\Leftrightarrow\)\(\left|2x-1\right|=0\)

\(\Leftrightarrow\)\(2x-1=0\)

\(\Leftrightarrow\)\(2x=1\)

\(\Leftrightarrow\)\(x=\frac{1}{2}\)

Vậy GTNN của \(A\) là \(8\) khi \(x=\frac{1}{2}\)

Chúc bạn học tốt ~ 

15 tháng 6 2018

\(2)\) Ta có : 

\(B=\left|x-3\right|+\left|x-9\right|-1\)

\(B=\left|x-3\right|+\left|9-x\right|-1\ge\left|x-3+9-x\right|-1=\left|6\right|-1=6-1=5\)

Dấu "=" xảy ra khi và chỉ khi \(\left(x-3\right)\left(9-x\right)\ge0\)

Trường hợp 1 : 

\(\hept{\begin{cases}x-3\ge0\\9-x\ge0\end{cases}\Leftrightarrow\hept{\begin{cases}x\ge3\\x\le9\end{cases}\Leftrightarrow}3\le x\le9}\)

Trường hợp 2 : 

\(\hept{\begin{cases}x-3\le0\\9-x\le0\end{cases}\Leftrightarrow\hept{\begin{cases}x\le3\\x\ge9\end{cases}}}\) ( loại ) 

Vậy GTNN của \(B\) là \(5\) khi \(3\le x\le9\)

Chúc bạn học tốt ~