C

1003107510

Level: 
C
Find the solution set of the following quadratic equation in the complex plane. \[ x+\frac{\mathrm{i}}2=\frac1x+\frac2{\mathrm{i}} \]
\( \left\{-\frac12\mathrm{i};-2\mathrm{i} \right\} \)
\( \left\{\frac12\mathrm{i};2\mathrm{i} \right\} \)
\( \left\{\frac12\mathrm{i};-2\mathrm{i} \right\} \)
\( \left\{-\frac12\mathrm{i};2\mathrm{i} \right\} \)
\( \emptyset \)

1003107509

Level: 
C
Find the solution set of the following quadratic equation in the complex plane. \[ (3-2\mathrm{i})x^2-(2-4\mathrm{i})x + 2 = 0 \]
\( \left\{ 1-\mathrm{i}; \frac1{13}+\frac5{13}\mathrm{i} \right\} \)
\( \left\{ -1+\mathrm{i}; -\frac1{13}-\frac5{13}\mathrm{i} \right\} \)
\( \emptyset \)
\( \left\{ -1+\mathrm{i}; \frac1{13}+\frac5{13}\mathrm{i} \right\} \)
\( \left\{ 1-\mathrm{i}; -\frac1{13}-\frac5{13}\mathrm{i} \right\} \)

1003107507

Level: 
C
Find the solution set of the following quadratic equation in the complex plane. \[ x^2 +3\mathrm{i}x + 10 = 0 \]
\( \{-5\mathrm{i}; 2\mathrm{i}\} \)
\( \{-2\mathrm{i}; 5\mathrm{i}\} \)
\( \{2-5\mathrm{i}; 5-2\mathrm{i}\} \)
\( \{-2+5\mathrm{i}; -5+2\mathrm{i}\} \)
\( \emptyset \)

1003107506

Level: 
C
Find the complex roots of the following quadratic equation. \[ 9x^2 + 4\mathrm{i} = 0 \]
\( x_1=-\frac{\sqrt2}3+\frac{\sqrt2}3\mathrm{i}\text{, }\ x_2=\frac{\sqrt2}3-\frac{\sqrt2}3\mathrm{i} \)
\( x_1=\frac23\mathrm{i}\text{, }\ x_2=-\frac23\mathrm{i} \)
\( x_1=\frac{\sqrt2}3+\frac{\sqrt2}3\mathrm{i}\text{, }\ x_2=-\frac{\sqrt2}3-\frac{\sqrt2}3\mathrm{i} \)
\( x_1=\frac23\text{, }\ x_2=-\frac23 \)

1003107505

Level: 
C
Find the complex roots of the following quadratic equation. \[ 4\mathrm{i}x^2 + 1 = 0 \]
\( x_1=\frac{\sqrt2}4+\frac{\sqrt2}4\mathrm{i}\text{, }\ x_2=-\frac{\sqrt2}4-\frac{\sqrt2}4\mathrm{i} \)
\( x_1=-\frac{\sqrt2}4+\frac{\sqrt2}4\mathrm{i}\text{, }\ x_2=\frac{\sqrt2}4-\frac{\sqrt2}4\mathrm{i} \)
\( x_1=\frac12+\frac12\mathrm{i}\text{, }\ x_2=-\frac12-\frac12\mathrm{i} \)
\( x_1=-\frac12+\frac12\mathrm{i}\text{, }\ x_2=\frac12-\frac12\mathrm{i} \)

1003107504

Level: 
C
Find the complex roots of the following quadratic equation. \[ 16\mathrm{i}x^2- 9\mathrm{i}^3 = 0 \]
\( x_1=\frac34\mathrm{i}\text{, }\ x_2=-\frac34\mathrm{i} \)
\( x_1=\frac34\text{, }\ x_2=-\frac34\)
\( x_1=\frac43\mathrm{i}\text{, }\ x_2=-\frac43\mathrm{i} \)
\( x_1=\frac43\text{, }\ x_2=-\frac43 \)

1003107503

Level: 
C
Find the complex roots of the following quadratic equation. \[ (3-\mathrm{i})x^2-(1-2\mathrm{i})x = 0 \]
\( x_1=0\text{, }\ x_2=\frac12-\frac12\mathrm{i} \)
\( x_1=0\text{, }\ x_2=-\frac12+\frac12\mathrm{i} \)
\( x_1=0\text{, }\ x_2=\frac12+\frac12\mathrm{i} \)
\( x_1=0\text{, }\ x_2=-\frac12-\frac12\mathrm{i} \)

1003107501

Level: 
C
Find the complex roots of the following quadratic equation. \[ 2\mathrm{i}\,x^2 - 5\mathrm{i}\,x = 0 \]
\( x_1=0\text{, }\ x_2 = \frac52 \)
\( x_1=0\text{, }\ x_2 = \frac52\mathrm{i} \)
\( x_1=0\text{, }\ x_2 = -\frac52 \)
\( x_1=0\text{, }\ x_2 = -\frac52\mathrm{i} \)
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