Miền nghiệm của hệ bất phương trình \(\left\{ \begin{array}{l}
3x - 4y + 12 \le 0\\
x + y - 5 \ge 0\\
x + 1 > 0
\end{array} \right.\)

Là miền chứa điểm nào trong các điểm sau?

Chia sẻ

Một số câu hỏi khác cùng bài thi.

• Số -2 thuộc tập nghiệm của bất phương trình nào sau đây?

• Viết phương trình tổng quát của đường thẳng đi qua 2 điểm A(3 ; -1) và B(1 ; 5)

• Cho \(\tan \alpha  = 3\). Khi đó \(\frac{{\sin \alpha  - 2\cos \alpha }}{{2\sin \alpha  + 3\cos \alpha }}\) có giá trị bằng :

• Kết quả nào sau đây là tập nghiệm đúng của bất phương trình \(\sqrt {{x^2} + 1}  > 0\)

• Giải bất phương trình \(2x - 1 \ge 0\). Kết quả tập nghiệm nào sau đây là đúng?

• Cho ΔABC có góc A = 60⁰, góc B = 45⁰, AC = 2. Gọi độ dài cạnh BC = a thì 

• Cho (Ox, Oy)=22⁰30' + k.360⁰. Tìm tất cả các giá trị của k để (Ox, Oy)=1822⁰30' 

• Biểu thức f(x) = -2x + 1 nhận giá trị không âm khi? 

• Tiếp tuyến với đường tròn ( C): x² + y² = 2 tại điểm M(1;1) có phương trình là :

• Cho \(\cot \alpha  = 2\). Khi đó \(P = \frac{{\sin \alpha  + 2\cos \alpha }}{{2{{\sin }^3}\alpha  + 3{{\cos }^3}\alpha }}\) có giá trị bằng :

• Đẳng thức nào sau đây SAI

• Cung nào sau đây có điểm cuối trùng với B’.

• Bảng xét dấu sau là của biểu thức nào? 

  

• Cho tana = 2 khi đó tan(a + 45⁰) bằng giá trị nào sau đây:

• Trên một đường tròn có bán kính r = 5, độ dài của cung có số đo \(\frac{\pi }{8}\) là:

• Giải bất phương trình \(\frac{{3x + 6}}{{2 - x}} > 0\) . Kết quả tập nghiệm nào sau đây là đúng?

• Cho \(\sin x + \cos x = m\) với \(\left| m \right| \le \sqrt 2 \). Tính theo m giá trị.của P = sin x.cosx:

• Biểu thức nào sau đây luôn dương với mọi giá trị của ẩn số?

• Biểu thức \(A = \frac{{\sin x + \sin 3x + \sin 5x}}{{\cos x + \cos 3x + \cos 5x}}\) được rút gọn thành:

• Góc có số đo 120⁰ đổi sang rađian là:

• Giải hệ bất phương trình \(\left\{ \begin{array}{l}
  x - 1 > 0\\
  x - 2 > 0
  \end{array} \right.\). Kết quả tập nghiệm nào sau đây là đúng? 

• Khẳng định nào sau đây SAI:

• Điều kiện xác định của bất phương trình \(\sqrt {\frac{{{x^2} - 2}}{{{x^2} - 3x + 6}}}  - 2{x^2} > 3x + 5\) là:

• Cho ΔABC có BC = 12, AC = 15,góc C.= 60⁰ .Khi đó độ dài cạnh AB là: 

• Giao điểm M của \(\left( {{d_1}} \right):\left\{ \begin{array}{l}
  x = 1 - 2t\\
  y =  - 3 + 5t
  \end{array} \right.\) và (d₂): 3x - 2y - 1 = 0 là:

• Miền nghiệm của hệ bất phương trình \(\left\{ \begin{array}{l}
  3x - 4y + 12 \le 0\\
  x + y - 5 \ge 0\\
  x + 1 > 0
  \end{array} \right.\)

  Là miền chứa điểm nào trong các điểm sau?

• Tập nghiệm của bất phương trình \(3{x^2} - 5x + 2 \le 0\) là:

• Tìm côsin góc giữa 2 đường thẳng  \({\Delta _1}:x + 2y - 7 = 0\) và \({\Delta _1}: 2x - 4y + 9 = 0\)

• Đẳng thức nào sau đây SAI? 

• Khoảng cách từ điểm M(5 ; -1) đến đường thẳng \(\Delta \): 3x + 2y + 13 = 0 là :

• Phương trình tham số của đường thẳng đi qua điểm A(3 ;-1) và có véc tơ pháp tuyến \(\overrightarrow n \left( {3;1} \right)\)

• Biểu thức \(A = \sin (\pi  + x) - \cos (\frac{\pi }{2} - x) + \cot (2\pi  - x) + \tan (\frac{{3\pi }}{2} - x)\) có biểu thức rút gọn là:

• Tập nghiệm của bất phương trình \(|2x - 3| \le x + 12\)

• Cho ΔABC có BC = 12, AC = 15,góc C.= 60⁰ .Khi đó diện tich S của ΔABC là: 

• Đường tròn (C): x² + y² + 2x + 4y – 4 = 0 có tâm I, bán kính R là :

• Viết phương trình tham số của đường thẳng đi qua 2 điểm A(4 ; -2) và B(1 ; 1).

• Cặp số (1;-3) thuộc miền nghiệm của bất phương trình nào:

• Với giá trị nào của n thì đẳng thức sau luôn đúng 

  \(\sqrt {\frac{1}{2} + \frac{1}{2}\sqrt {\frac{1}{2} + \frac{1}{2}\sqrt {\frac{1}{2} + \frac{1}{2}\cos x} } } \,\,\, = \,\,\cos \frac{x}{n},\,\,\,0\,\, < \,\,x\,\, < \,\,\frac{\pi }{2}.\)

• Cho đường thẳng(d): x - 2y + 1 = 0. Đường thẳng  đi qua (\(\Delta \)) và M(1;-1) và (\(\Delta \)) //(d) thì (\(\Delta \))  có phương trình : 

• Cho góc lượng giác \(\alpha  = \left( {OA;OB} \right)\) có số đo bằng \(\frac{\pi }{5}\) . Hỏi trong các số sau, số nào là số đo của một góc lượng giác có cùng tia đầu và tia cuối của góc \(\alpha \)

• Cho tam giác ABC có A(2 ; -1), B(4 ; 5), C(-3 ; 2). Viết phương trình tổng quát của đường cao AH

• Tập nghiệm của bất phương trình \(\left( {x - 3} \right)\left( {2x + 6} \right) \ge 0\) là :

• Cho \({\rm{cos}}\alpha  =  - \frac{2}{5}\,\,\,\left( {\frac{\pi }{2} < \alpha  < \pi } \right)\). Khi đó \(\alpha \) bằng:

• Cho elip ( E ) có phương trình: \(\frac{{{x^2}}}{{16}} + \frac{{{y^2}}}{9} = 1\). Khi đó tiêu cự của ( E ) là: 

• Tìm các giá trị của m để bất phương trình \(\left( {m - 2} \right){x^2} + 2\left( {2m - 3} \right)x + 5m - 6 < 0\)vô nghiệm.

• Cho \(\frac{\pi }{2} < \alpha  < \pi \). Điều khẳng định nào sau đây là đúng?

• Cho ΔABC có BC = 12, AC = 15,góc C.= 60⁰ .Khi đó độ dài chiều cao h_c hạ từ đỉnh C của ΔABC là:

• Trong các biểu thức sau biểu thức nào luôn cùng dấu với hệ số của x²

• Trên đường tròn định hướng cho cung \(\alpha  =  - \frac{\pi }{6} + \frac{{k\pi }}{5}\) có điểm đầu là A. Khi đó số các điểm cuối trên đường tròn lượng giác là: 

• Gọi H là trực tâm của tam giác ABC. Phương trình các cạnh và đường cao của tam giác là: AB: 7x - y + 4 = 0, BH: 2x + y - 4 = 0, AH: x - y - 2 = 0. Phương trình đường cao CH của tam giác ABC là:

Một số câu hỏi khác có thể bạn quan tâm.

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

  All relationships go through difficult times. In the past, when married couples had problems they usually didn’t (31) _________. They had to either (32) _________ with each other or continue to live together in an unhappy relationship. Getting divorced wasn’t an option for most people due to economic and social reasons. Some people believe that this wasn’t such a bad thing. They say that relationships require hard work and (33) _________. “If a relationship is going to last a lifetime, you have to keep working at it,” says Doreen, who is celebrating her fiftieth wedding anniversary this year. “It isn’t all roses and romance. No one perfect all of the time. These days young people give up when there’s the (34) _________ argument.” Experts agree that communication is key. The most important thing is to keep talking. How many times have you heard yourself say to somebody, “If only you’d listen!” or “I wish you wouldn’t do that!” The truth is, the (35) ______ couples talk, the better their relationship can be.  

  Question 31:

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

  All relationships go through difficult times. In the past, when married couples had problems they usually didn’t (31) _________. They had to either (32) _________ with each other or continue to live together in an unhappy relationship. Getting divorced wasn’t an option for most people due to economic and social reasons. Some people believe that this wasn’t such a bad thing. They say that relationships require hard work and (33) _________. “If a relationship is going to last a lifetime, you have to keep working at it,” says Doreen, who is celebrating her fiftieth wedding anniversary this year. “It isn’t all roses and romance. No one perfect all of the time. These days young people give up when there’s the (34) _________ argument.” Experts agree that communication is key. The most important thing is to keep talking. How many times have you heard yourself say to somebody, “If only you’d listen!” or “I wish you wouldn’t do that!” The truth is, the (35) ______ couples talk, the better their relationship can be.  

  Question 33:

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

  All relationships go through difficult times. In the past, when married couples had problems they usually didn’t (31) _________. They had to either (32) _________ with each other or continue to live together in an unhappy relationship. Getting divorced wasn’t an option for most people due to economic and social reasons. Some people believe that this wasn’t such a bad thing. They say that relationships require hard work and (33) _________. “If a relationship is going to last a lifetime, you have to keep working at it,” says Doreen, who is celebrating her fiftieth wedding anniversary this year. “It isn’t all roses and romance. No one perfect all of the time. These days young people give up when there’s the (34) _________ argument.” Experts agree that communication is key. The most important thing is to keep talking. How many times have you heard yourself say to somebody, “If only you’d listen!” or “I wish you wouldn’t do that!” The truth is, the (35) ______ couples talk, the better their relationship can be.

  Question 32:  

• Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

  One of the hottest topics on the international development agenda is how to harness the power of International Monetary Fund for the benefit of developing countries. What is sometimes called “the death of distance”, brought about by the Internet, allow professional services such as (31) ________ education and training to be provided easily and quickly to (32) ________ areas. Some of the gains can be seen in countries as diverse as India and Morocco, where innovations range from (33) ________ government announcements to local craftsmen selling their wares to a (34)______ market. But already a huge and expanding digital divide is opening up between developed and developing nations. The major tasks facing world leaders at present is to supply everybody on the planet with clean water, basic education and the drugs needed to fight preventable diseases. Installing a modem in every classroom and linking us to (35) ________ must be a lesser criteria at least.

  Question 31:        

• Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

  One of the hottest topics on the international development agenda is how to harness the power of International Monetary Fund for the benefit of developing countries. What is sometimes called “the death of distance”, brought about by the Internet, allow professional services such as (31) ________ education and training to be provided easily and quickly to (32) ________ areas. Some of the gains can be seen in countries as diverse as India and Morocco, where innovations range from (33) ________ government announcements to local craftsmen selling their wares to a (34)______ market. But already a huge and expanding digital divide is opening up between developed and developing nations. The major tasks facing world leaders at present is to supply everybody on the planet with clean water, basic education and the drugs needed to fight preventable diseases. Installing a modem in every classroom and linking us to (35) ________ must be a lesser criteria at least.  

  Question 32:          

• Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

  One of the hottest topics on the international development agenda is how to harness the power of International Monetary Fund for the benefit of developing countries. What is sometimes called “the death of distance”, brought about by the Internet, allow professional services such as (31) ________ education and training to be provided easily and quickly to (32) ________ areas. Some of the gains can be seen in countries as diverse as India and Morocco, where innovations range from (33) ________ government announcements to local craftsmen selling their wares to a (34)______ market. But already a huge and expanding digital divide is opening up between developed and developing nations. The major tasks facing world leaders at present is to supply everybody on the planet with clean water, basic education and the drugs needed to fight preventable diseases. Installing a modem in every classroom and linking us to (35) ________ must be a lesser criteria at least.  

  Question 33:          

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

  Many people today would like the traditional two-parent family back, that is to say, they want a man and a woman to (31)______ for life; they also think the man should support the family and the woman should stay home with the children. However, few families now (32)______ into this category. In fact, if more women decide to have children on their own, the single-parent household may become more typical than the traditional family in many countries. Also, unmarried couples may decide to have more children – or they might take in foster children or (33)______. And because people are staying single and living longer (often as widows), there may be more one-person households. (34)______ the other hand, some people believe similar events happen again and again in history: if this is true, people may go back to the traditional (35)_____ or nuclear family of the past. Others think the only certainty in history is change: in other words, the structure of the future family could begin to change faster and faster and in more and more ways.  

  Question 31:

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

  Many people today would like the traditional two-parent family back, that is to say, they want a man and a woman to (31)______ for life; they also think the man should support the family and the woman should stay home with the children. However, few families now (32)______ into this category. In fact, if more women decide to have children on their own, the single-parent household may become more typical than the traditional family in many countries. Also, unmarried couples may decide to have more children – or they might take in foster children or (33)______. And because people are staying single and living longer (often as widows), there may be more one-person households. (34)______ the other hand, some people believe similar events happen again and again in history: if this is true, people may go back to the traditional (35)_____ or nuclear family of the past. Others think the only certainty in history is change: in other words, the structure of the future family could begin to change faster and faster and in more and more ways.  

  Question 33:

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

  BOOKS Nearly all the discoveries that have been made through the ages can (31)……in books. The invention of the book is one of humankind’s(32)………achievements, the importance of which can not be overestimated. Books are very adaptable, providing us with both entertainment and information. The production of books began in Ancient(33)………though not in the form that is accessible to us today. The books read by the Romans, however, have some similarities to the ones we read now. Until the middle of the 15th century, in Europe, all books were written by hand. They were often(34) …………illustrated and always rare and expensive. With printing came the possibility of cheap, large-scale publication and distribution of books making (35)………more widespread and recognizable.

  Question 31:  

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35:

  Nearly all the discoveries that have been made through the ages can (31)……in books. The invention of the book is one of humankind’s(32)………achievements, the importance of which can not be overestimated. Books are very adaptable, providing us with both entertainment and information. The production of books began in Ancient(33)………though not in the form that is accessible to us today. The books read by the Romans, however, have some similarities to the ones we read now. Until the middle of the 15th century, in Europe, all books were written by hand. They were often(34) …………illustrated and always rare and expensive. With printing came the possibility of cheap, large-scale publication and distribution of books making (35)………more widespread and recognizable.  

  Question 32: