Bài tập 16 trang 213 SGK Toán 12 NC

A. \({x_1} + {x_2} = 0\)

B. \(2{x_1} - {x_2} = 1\)

C. \({x_1} - {x_2} = 2\)

D. \({x_1} + 2{x_2} = 0\)

A. \(2\ln 3\)                                 B. \(1\)

C. \(\frac{2}{{\ln 3}}\)               D. \(\frac{1}{{2\ln 3}}\)

A. \(0\)                                        B. \(1\)

C. \(2\)                                        D. \(3\)

A. \(\frac{7}{2}\)                        B. \(\frac{1}{2}\)

C. \(2\)                                        D. \(\frac{3}{8}\)

A. \(0\)                                        B. \(1\)

C. \(2\)                                        D. \(3\)

A. \(y = 2019\)

B. \(x = 2019\)

C. \(y = x + 2019\)

D. \(y = 2019x\)

A. \(3\)                                        B. \(0\)

C. \(1\)                                        D. \(2\)

A. \(2018\)                                  B. \(2014\)

C. \(2013\)                                  D. \(2015\)

A. \(1\) và \(2\)                            B. \( - 2\) và \(1\)

C. \(1\) và \( - 2\)                        D. \(2\) và \(1\) 

A. \( - 10\)                                   B. \(12\)

C. \( - 17\)                                   D. \(1\)

A. \(\int {{e^x}dx}  = {e^x} + C\)

B. \(\int {\ln xdx}  = \frac{1}{x} + C\)

 C. \(\int {\left( {{x^2} - 1} \right)dx}  = \frac{{{x^3}}}{3} - x + C\)

D. \(\int {\frac{x}{{{x^2} + 1}}dx}  = \frac{1}{2}\ln \left( {{x^2} + 1} \right) + C\)

A. \(11\)                                      B. \(13\)

C. \(15\)                                      D. \(14\)

A. \(D = \left[ {2; + \infty } \right)\)

B. \(D = \mathbb{R}\backslash \left\{ 2 \right\}\)

C. \(D = \mathbb{R}\)

D. \(D = \left( {2; + \infty } \right)\)

A. \(\log \left( {ab} \right) = \log a + \log b\)

B. \(\log \left( {ab} \right) = \log a.\log b\)

C. \(\log \frac{a}{b} = \frac{{\log a}}{{\log b}}\)

D. \(\log \frac{a}{b} = \log b - \log a\)

A. \(m =  \pm 1.\)      B. \(m =  \pm 2.\)

C. \(m =  \pm 3.\)    D. \(m =  \pm 4.\)

A. 2.                               B. 4.

C. 1.                               D. 3.

A. 0.                               B. \(3\sqrt 2 \)

C. \(2\sqrt 2 \)                  D. 1.

A. \(\tan x + x + C.\)

B. \( - \tan x - x + C.\)

C. \(\tan x - x + C.\)

D. \( - \tan x + x + C.\)