Đề Ôn Tập Giữa Học Kì 1 Môn Toán 12 Online-Đề 3

1. Hàm số nghịch biến trên khoảng \(\left( { - 1;3} \right)\).

2. Hàm số đồng biến trên khoảng \(\left( { - \infty ; + \infty } \right)\).

3. Hàm số đồng biến trên khoảng \(\left( { - \infty ;1} \right)\).

4. Hàm số nghich biến trên khoảng \(\left( { - \infty ; - 1} \right)\).

1. \(\left( {1;\,\, + \infty } \right)\).

2. \(\left( { - \,\infty ;\,\,0} \right)\).

3. \(\left( { - 2;\,\,2} \right)\).

4. \(\left( {0;\,\,2} \right)\).

1. \(\left( { - \,2;\,\,0} \right)\).

2. \((0;2)\).

3. \(\left( { - \,\infty ;\,\, - 2} \right)\).

4. \((0; + \infty )\).

1. \(\left( { - 4;2} \right)\).

2. \(\left( { - \infty ; - 2} \right)\).

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

4. \(\left( {1;2} \right)\).

1. \(4\).

2. \(3\).

3. \(2\).

4. \(1\).

1. 8.

2. 6.

3. 4.

4. 5.

1. \((AB'C).\)

2. \((ACD').\)

3. \((A'BC').\)

4. \((AB'C').\)

1. 3.

2. 6.

3. 4.

4. 7.

1. \(x = - 1\).

2. \(x = 2\).

3. \(\left( {2;0} \right)\).

4. \(\left( { - 1;2} \right)\).

1. 4.

2. 3.

3. 2.

4. 1.

1. 2.

2. 1.

3. -1.

4. -2.

1. \(\mathop {\min }\limits_{\left[ {1;2} \right]} f\left( x \right) = \frac{1}{2}\).

2. \(\mathop {\min }\limits_{\left[ {1;2} \right]} f\left( x \right) = 1\).

3. \(\mathop {\min }\limits_{\left[ {1;2} \right]} f\left( x \right) = 0\).

4. \(\mathop {\min }\limits_{\left[ {1;2} \right]} f\left( x \right) = - 1\).

1. \(\sqrt 6 \).

2. \(\sqrt {28} \).

3. \(0\).

4. \(2\).

1. \(m = 1\).

2. \(m = 5\).

3. \(m = 3\).

4. \(m = 4\).

1. \(x = 1.\)

2. \(y = - 1.\)

3. \(x = - 1.\)

4. \(y = 1\).

1. 1.

2. 3.

3. 2.

4. 0.

1. \(V = \frac{1}{3}S{h^2}.\)

2. \(V = \frac{1}{3}Sh.\)

3. \(V = Sh.\)

4. \(V = S{h^2}.\)$$

1. 1.

2. 2.

3. 3.

4. 0.

1. \(y = {x^3} - 3x + 2.\)

2. \(y = - {x^4} + 2{x^2}.\)

3. \(y = - {x^3} + 3x + 2.\)

4. \(y = {x^4} - 2{x^2}.\)

1. \(y = \frac{{2x + 1}}{{x - 3}}.\)

2. \(y = \frac{{3x + 1}}{{x - 2}}.\)

3. \(y = \frac{{3x - 1}}{{x + 2}}.\)

4. \(y = \frac{{2x - 1}}{{x + 3}}.\)

1. \(y = - x + 1.\)

2. \(y = x.\)

3. \(y = - x - 1.\)

4. \(y = x - 2.\)

1. \(V = S{h^2}.\)$$

2. \(V = Sh.\)

3. \(V = \frac{1}{3}S{h^2}.\)

4. \(V = \frac{1}{3}Sh.\)

1. \(7c{m^3}\).

2. \(10c{m^3}\).

3. \(21c{m^3}\).

4. \(12c{m^3}\).

1. \(V = \,4{a^3}\).

2. \(V = \frac{{3{a^3}}}{4}\).

3. \(V = \,\,\frac{{{a^3}}}{4}\).

4. \(V = {a^3}\).

1. \(\sqrt 3 a.\)

2. \(6\sqrt 3 a.\)

3. \(4\sqrt 3 a.\)

4. \(\frac{{4\sqrt 3 }}{3}a.\)

1. \(V = \frac{{{a^3}\sqrt 3 }}{{12}}\).

2. \(V = \frac{{{a^3}}}{4}\).

3. \(V = \frac{{3{a^3}}}{4}\).

4. \(V = \frac{{4{a^3}\sqrt 3 }}{3}\).

1. \(\,V = \,48{\text{ }}c{m^3}\).

2. \(\,V = \,\frac{{144}}{7}{\text{ }}c{m^3}\).

3. \(\,V = \,\frac{{16}}{5}{\text{ }}c{m^3}\).

4. \(\,V = \,96{\text{ }}c{m^3}\).

1. \(m \in \left( {0; + \infty } \right)\).

2. \(m \in \left( { - \infty ;0} \right)\).

3. \(m \in \mathbb{R}\).

4. \(m \in ( - \infty ;0]\).

1. \(2023\).

2. \(2\).

3. \(4\).

4. \(3\).

1. \(\left( {5;7} \right).\)

2. \(\left( {2;3} \right).\)

3. \(\left( {3;4} \right).\)

4. \(\left( {4;5} \right).\)

1. 6.

2. 21.

3. 9.

4. 5.

1. 4.

2. 1.

3. 2.

4. 3.