Bài tập 5 trang 106 SGK Đại số 10

A. \(215250 < T < 215350\)

B. \(215200 < T < 215400\)

C. \(215255 < T < 215355\)

D. \(214000 < T < 216000\)

A. \(x < y \Leftrightarrow {x^3} < {y^3}\)

B. \({x^2} < {y^2} \Leftrightarrow x < y\)

C. \(\left\{ {\begin{array}{*{20}{c}}{x > 1}\\{y > 2}\end{array}} \right. \Rightarrow xy > 2\)

D. \(\left\{ {\begin{array}{*{20}{c}}{x > 1}\\{y > 2}\end{array}} \right. \Rightarrow x + y > 3\)

A. \(S = \left( { - \dfrac{3}{2};0} \right)\)

B. \(S = \left( { - \dfrac{5}{2};1} \right)\)

C. \(S = \left( { - \dfrac{5}{2}; - \dfrac{3}{2}} \right) \cup \left( {0;1} \right)\)

D. \(S = \left( { - \infty ; - \dfrac{5}{2}} \right) \cup \left( {1; + \infty } \right)\)

A. \(S = \left\{ { - 3;2} \right\}\)

B. \(S = \left\{ {\dfrac{{11}}{8};2} \right\}\)

C. \(S = \left\{ { - 3;\dfrac{{11}}{8}} \right\}\)

D. \(S = \left\{ {\dfrac{7}{8};2} \right\}\)

A. \(S = \left( { - \infty ; - \dfrac{7}{2}} \right] \cup \left[ {1; + \infty } \right)\)

B. \(S = \left( { - \infty ;1} \right] \cup \left[ {\dfrac{7}{2}; + \infty } \right)\)

C. \(S = \left[ { - \dfrac{7}{2};1} \right]\)

D. \(S = \left[ { - 1;\dfrac{7}{2}} \right]\)

A. \(S = \left\{ {\dfrac{{11}}{7};3} \right\}\) 

B. \(S = \left\{ { - \dfrac{{11}}{7};3} \right\}\)         

C. \(S = \left\{ 3 \right\}\) 

D. \(S = \left\{ {\dfrac{{11}}{7}} \right\}\)

A. \(S = \left\{ {3;6} \right\}\) 

B. \(S = \left\{ {2;4} \right\}\)   

C. \(S = \left\{ {4;6} \right\}\)

D. \(S = \left\{ {2;3} \right\}\)

A. \(S = \left[ {\dfrac{1}{4}; + \infty } \right)\)   

B. \(S = \emptyset \)                    

C. \(S = \left\{ {\dfrac{1}{4}} \right\}\)

D. \(S = \mathbb{R}\backslash \left\{ {\dfrac{1}{4}} \right\}\)

A. \(0 < m \le 4\)               

B. \(m \ge 8\)                     

C. \(m \ge 4\)                     

D. \(0 < m \le 8\)

A. \(S = \left\{ {9;16} \right\}\)              

B. \(S = \left\{ {1;16} \right\}\)               

C. \(S = \left\{ {1;4} \right\}\)                 

D. \(S = \left\{ {4;9} \right\}\)

A. \(S = \left\{ {1;\dfrac{{14}}{3}} \right\}\)            

B. \(S = \left\{ 1 \right\}\)                      

C. \(S = \left\{ {\dfrac{{14}}{3}} \right\}\)                 

D. \(S = \emptyset \)

A. \(m = 0\)                 

B. \(m = 7\)

C. \(0 \le m \le 7\)        

C. \(m = 0\) hoặc \(m = 7\)

A.\(S = \left\{ { - 2} \right\}\) 

B.\(S = \left\{ { - \dfrac{7}{6}} \right\}\)                

C.\(S = \emptyset \)

D.\(S = \left\{ {\dfrac{7}{6}} \right\}\)

A.\(S = \left[ {1;4} \right]\)

B.\(S = \left[ {1; + \infty } \right)\)

C.\(S = \left( { - \infty ;0} \right] \cup \left[ {4; + \infty } \right)\) 

D.\(S = \left[ {4; + \infty } \right)\)

A.\(S = \left[ {\dfrac{2}{3};\dfrac{3}{4}} \right] \cup \left[ {2; + \infty } \right)\)

B.\(S = \left[ {\dfrac{2}{3};2} \right]\)

C.\(S = \left[ {1;2} \right]\)

D.\(S = \left[ {\dfrac{3}{4};2} \right]\)

A. \(S = \mathbb{R}\)

B.\(S = \mathbb{R}\backslash \left\{ { - \dfrac{3}{2}} \right\}\)           

C. \(S = \left\{ { - \dfrac{3}{2}} \right\}\)

D. \(S = \emptyset \)