Algebra
9.10 Bac.alg1
O rădacina complexă de ordin 4 a lui -1 este ... .]]>
1.0000000
0.3333333
0
0
#a
#b
#c
#d
<question><wirisCasSession><![CDATA[<session lang="en" version="2.0"><library closed="false"><mtext style="color:#ffc800" xml:lang="en">variables</mtext><group><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>s</mi><mo>=</mo><mi>roots</mi><mo>(</mo><mo>-</mo><mn>1</mn><mo>,</mo><mn>4</mn><mo>)</mo></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>i</mi><mo>=</mo><mi>random</mi><mo>(</mo><mn>1</mn><mo>,</mo><mn>4</mn><mo>)</mo></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>a</mi><mo>:=</mo><msub><mi>s</mi><mn>1</mn></msub></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>b</mi><mo>=</mo><msub><mi>s</mi><mn>2</mn></msub></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>c</mi><mo>=</mo><msub><mi>s</mi><mn>3</mn></msub></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>d</mi><mo>=</mo><msub><mi>s</mi><mn>4</mn></msub></math></input></command></group></library><group><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>z</mi></math></input><output><math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced close="}" open="{"><mtable align="center"><mtr><mtd><mfrac><msqrt><mn>2</mn></msqrt><mn>2</mn></mfrac><mo>+</mo><mfrac><mrow><msqrt><mn>2</mn></msqrt><mo>*</mo><imaginaryi/></mrow><mn>2</mn></mfrac><mo>,</mo><mo>-</mo><mfrac><msqrt><mn>2</mn></msqrt><mn>2</mn></mfrac><mo>+</mo><mfrac><mrow><msqrt><mn>2</mn></msqrt><mo>*</mo><imaginaryi/></mrow><mn>2</mn></mfrac><mo>,</mo><mo>-</mo><mfrac><msqrt><mn>2</mn></msqrt><mn>2</mn></mfrac><mo>-</mo><mfrac><mrow><msqrt><mn>2</mn></msqrt><mo>*</mo><imaginaryi/></mrow><mn>2</mn></mfrac><mo>,</mo><mfrac><msqrt><mn>2</mn></msqrt><mn>2</mn></mfrac><mo>-</mo><mfrac><mrow><msqrt><mn>2</mn></msqrt><mo>*</mo><imaginaryi/></mrow><mn>2</mn></mfrac></mtd></mtr></mtable></mfenced></math></output></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>z</mi><mn>1</mn></msub></math></input><output><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><msqrt><mn>2</mn></msqrt><mn>2</mn></mfrac><mo>+</mo><mfrac><mrow><msqrt><mn>2</mn></msqrt><mo>*</mo><imaginaryi/></mrow><mn>2</mn></mfrac></math></output></command></group><group><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"/></input></command></group></session>]]></wirisCasSession><correctAnswers><correctAnswer>#a</correctAnswer><correctAnswer id="1">#b</correctAnswer><correctAnswer id="2">#c</correctAnswer><correctAnswer id="3">#d</correctAnswer></correctAnswers><assertions><assertion name="equivalent_symbolic"/><assertion name="syntax_expression"/><assertion name="equivalent_symbolic" correctAnswer="1"/></assertions><options><option name="tolerance">10^(-4)</option><option name="relative_tolerance">false</option><option name="precision">4</option><option name="implicit_times_operator">false</option><option name="times_operator">·</option><option name="imaginary_unit">i</option></options><localData><data name="inputField">inlineEditor</data><data name="gradeCompound">and</data><data name="gradeCompoundDistribution"></data><data name="casSession"/></localData></question>