Đề Kiểm Tra 15 Phút Số Phức Online (Đề 1)

1. \(\left| z \right| = \frac{{\sqrt {34} }}{3}\)

2. \(\left| z \right| = \sqrt {34} \)

3. \(\left| z \right| = \frac{{5\sqrt {34} }}{3}\)

4. \(\left| z \right| = 34\)

1. \(\max \left| w \right| = 3\sqrt 5 + 2\)

2. \(\max \left| w \right| = \sqrt 5 - 1\)

3. \(\max \left| w \right| = 2\sqrt 5 + 2\)

4. \(\max \left| w \right| = 2\sqrt 5 + 1\)

1. \(4x - 2y - 1 = 0\)

2. \(4x - 6y - 1 = 0\)

3. \(4x + 2y - 1 = 0\)

4. \(4x - 2y + 1 = 0\)

1. 3 và -11

2. 3 và 11

3. 3 và -7

4. -3 và -7

1. \({\left( {x - 2} \right)^2} + {\left( {y + 1} \right)^2} = 4\)

2. \({\left( {x - 2} \right)^2} + {\left( {y - 1} \right)^2} = 4\)

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

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

1. \(\min \left| {\rm{w}} \right| = \frac{{\sqrt {26} }}{{26}}.\)

2. \(\min \left| {\rm{w}} \right| = \frac{{\sqrt {13} }}{{13}}.\)

3. \(\min \left| {\rm{w}} \right| = \frac{{2\sqrt {26} }}{{13}}.\)

4. \(\min \left| {\rm{w}} \right| = \frac{{\sqrt {26} }}{{13}}.\)

1. \(\frac{3}{4}\)

2. \(\frac{9}{4}\)

3. \( - \frac{9}{4}\)

4. \(3\)

1. \(\overline z = - 3 - i\)

2. \(\overline z = 3 + i\)

3. \(z = i\left( {3i + 3} \right)\)

4. \(\overline z = - 3 + i\)

1. \(\frac{9}{{25}} - \frac{{23}}{{25}}i\)

2. \(\frac{{16}}{{15}} - \frac{{11}}{{15}}i\)

3. \(\frac{{16}}{{17}} - \frac{{13}}{{17}}i\)

4. \(\frac{9}{5} - \frac{4}{5}i\)

1. \(M + N = 4.\)

2. \(M + N = 3\sqrt 5 .\)

3. \(M + N = 2\sqrt 5 .\)

4. \(M + N = 2\sqrt {10} .\)