A. u3 = 4
B. u3 = 2
C. u3 = -5
D. u3 = 7
A. \(y = \frac{{1 - 2x}}{{x + 1}}\)
B. \(y = \frac{{2x - 1}}{{x + 1}}\)
C. \(y = \frac{{2x + 1}}{{x - 1}}\)
D. \(y = \frac{{2x + 1}}{{x + 1}}\)
A. \(\left( {3; + \infty } \right)\)
B. (1; 2)
C. \(\left( { - \infty ;1} \right)\)
D. (-3; 1)
A. x = -1
B. x = -2
C. y = 2
D. y = -2
A. \(S = 2\pi {a^2}\)
B. \(S = \frac{{\pi {a^2}}}{2}\)
C. \(S = \pi {a^2}\)
D. \(S = 4\pi {a^2}\)
A. \(S = \frac{{4\pi {a^2}}}{3}\)
B. \(S = \frac{{\pi {a^2}}}{3}\)
C. \(S = \pi {a^2}\)
D. \(S = 4\pi {a^2}\)
A. \(x = \frac{8}{3}\)
B. \(x = \frac{10}{3}\)
C. \(x = \frac{16}{3}\)
D. \(x = \frac{11}{3}\)
A. \(P = {2^{x - y}}\)
B. \(P = {4^{xy}}\)
C. \(P = {2^{xy}}\)
D. \(P = {2^{x + y}}\)
A. \(V = \frac{{{a^3}}}{4}\)
B. \(V = \frac{{{a^3}}}{6}\)
C. \(V = \frac{{{a^3}}}{3}\)
D. \(V = {a^3}\)
A. 45
B. 11520
C. -11520
D. 256
A. 450
B. 300
C. 1200
D. 600
A. 5
B. 3
C. 2
D. 4
A. \(M - m = 2\sqrt 2 \)
B. \(M - m = 2\sqrt 2 + 2\)
C. M - m = 4
D. \(M - m = 2\sqrt 2 - 2\)
A. \(V = \frac{{2{a^3}}}{3}\)
B. \(V = 2{a^3}\)
C. \(V = \frac{{{a^3}}}{3}\)
D. \(V = \frac{{{a^3}\sqrt 3 }}{3}\)
A. \(\left( {3; + \infty } \right)\)
B. \(\left( { - \infty ;1} \right)\) và \(\left( {0; + \infty } \right)\)
C. \(\left( { - \infty ; - 2} \right)\) và \(\left( {0; + \infty } \right)\)
D. (-2; 0)
A. \(\frac{7}{{15}}\)
B. \(\frac{8}{{15}}\)
C. \(\frac{1}{{5}}\)
D. \(\frac{1}{{15}}\)
A. \({\log _{{a^3}}}\left| b \right| = \frac{1}{2}{\log _a}\left| b \right|\)
B. \(\frac{1}{2}{\log _a}{b^2} = {\log _a}\left| b \right|\)
C. \(\frac{1}{2}{\log _a}{a^2} = 1\)
D. \(\frac{1}{2}{\log _a}b{}^2 = \log {}_ab\)
A. \(y = {x^3} - 6{x^2} + 9x - 5\)
B. \(y = {\left( {{x^2} + 1} \right)^2}\)
C. \(y = 2{x^4} - 4{x^2} + 1\)
D. \(y = - {x^4} - 3{x^2} + 4\)
A. 3
B. 2
C. 0
D. 1
A. P = 251
B. P = 21
C. P = 22
D. P = 23
A. \(y = - {x^4} + 2{x^2} + 1\)
B. y = sinx
C. \(y = \frac{{x + 2}}{{x - 1}}\)
D. \(y = - {x^3} - 2x\)
A. 3360
B. 3480
C. 246
D. 245
A. \(3M + 2m = \frac{{16}}{3}\)
B. 3M + 2m = 15
C. 3M + 2m = 14
D. 3M + 2m = 12
A. \(x = \frac{1}{4}\)
B. \(x = - \frac{3}{4}\)
C. x = -1
D. \(x = - \frac{1}{4}\)
A. \({x_1} + {x_2}\) = 4
B. \({x_1} + {x_2}\) = 6
C. \({x_1} + {x_2}\) = 5
D. \({x_1} + {x_2}\) = 3
A. \(V = \pi {a^3}\sqrt 3 \)
B. \(V = \frac{{\pi {a^3}\sqrt 3 }}{3}\)
C. \(V = \frac{{\pi {a^3}\sqrt 3 }}{{24}}\)
D. \(V = \frac{{3\pi {a^3}}}{8}\)
A. a < 0,b < 0,c < 0
B. a > 0,b < 0,c > 0
C. a < 0,b > 0,c < 0
D. a > 0,b < 0,c < 0
A. \(R = \frac{{a\sqrt 3 }}{2}\)
B. \(R = \frac{{a\sqrt 2 }}{4}\)
C. \(R = a\sqrt 2 \)
D. \(R = \frac{{a\sqrt 2 }}{2}\)
A. \(V = 2\sqrt 3 \)
B. \(V = \frac{{2\sqrt 3 }}{3}\)
C. \(V = \frac{{9\sqrt 3 }}{2}\)
D. \(V = \frac{{27\sqrt 3 }}{4}\)
A. y = 9x + 26;y = 9x - 6
B. y = 9x - 26
C. y = 9x - 26;y = 9x + 6
D. y = 9x + 26
A. \(V = \frac{{{a^3}}}{6}\)
B. \(V = \frac{{{a^3}}}{2}\)
C. \(V = \frac{{{a^3}\sqrt 6 }}{2}\)
D. \(V = \frac{{{a^3}\sqrt 2 }}{2}\)
A. \(V = \frac{{{a^3}\sqrt 5 }}{6}\)
B. \(V = \frac{{{a^3}\sqrt 5 }}{2}\)
C. \(V = \frac{{{a^3}\sqrt 2 }}{3}\)
D. \(V = \frac{{{a^3}\sqrt 5 }}{3}\)
A. 1
B. 6
C. 2
D. 7
A. \(SC = a\sqrt 3 \)
B. \(SC = a\sqrt 2 \)
C. SC = a
D. \(SC = \frac{{a\sqrt 2 }}{2}\)
A. 1
B. 2
C. 3
D. 0
A. \( - 2 < m < \frac{5}{4}\)
B. \( - \frac{5}{4} < m < 2\)
C. \(\frac{5}{4} \le m \le 2\)
D. \(\frac{5}{4} < m < 2\)
A. \(V = \pi {a^3}\sqrt 3 \)
B. \(V = \frac{{2\pi {a^3}\sqrt 7 }}{3}\)
C. \(V = 2\pi {a^3}\sqrt 7 \)
D. \(V = \pi {a^3}\)
A. \(\frac{{29}}{{68040}}\)
B. \(\frac{1}{{2430}}\)
C. \(\frac{{31}}{{68040}}\)
D. \(\frac{{33}}{{68040}}\)
A. \(d = \frac{{a\sqrt 3 }}{5}\)
B. \(d = \frac{{a\sqrt 5 }}{5}\)
C. \(d = \frac{{a\sqrt 2 }}{3}\)
D. \(d = \frac{{2a\sqrt 2 }}{3}\)
A. m < -2
B. \(m \le - 2\)
C. \( - 2 < m \le 1\)
D. -2 < m < 1
A. -3 < m < -1
B. \( - 3 < m < - \frac{3}{4}\)
C. \( - 1 < m < - \frac{3}{4}\)
D. \(m \ge - 3\)
A. 0 < m < 1
B. \( - 1 \le m \le 1\)
C. \(0 \le m \le 1\)
D. –1 < m < 1
A. 0 < m < 1
B. 1 < m < 2
C. -2 < m < 0
D. -2 < m < 2
A. \({\log _{\sqrt[3]{7}}}\frac{{121}}{8} = 6a + \frac{9}{b}\)
B. \({\log _{\sqrt[3]{7}}}\frac{{121}}{8} = 6a - \frac{9}{b}\)
C. \({\log _{\sqrt[3]{7}}}\frac{{121}}{8} = 6a - 9b\)
D. \({\log _{\sqrt[3]{7}}}\frac{{121}}{8} = \frac{2}{3}a - \frac{9}{b}\)
A. \(m \ge 0\)
B. \(m \ge - \frac{1}{4}\)
C. \(m \ge - 1\)
D. \(m \le - \frac{1}{4}\)
A. (-1;0)
B. (0;2)
C. \(\left( { - \infty ; - 1} \right)\)
D. \(\left( {2; + \infty } \right)\)
A. m = f(4)
B. m = f(0)
C. m = f(2)
D. m = f(1)
A. 779,8 m
B. 779,8 m
C. 741,2 m
D. 596,5m
A. max P = 1
B. max P = 4
C. max P = 2
D. max P = 3
A. \(V = \frac{{13}}{{18}}\)
B. \(V = \frac{{23}}{9}\)
C. \(V = \frac{5}{9}\)
D. \(V = \frac{7}{{18}}\)
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