/ operaţii cu matrice Fie matricele:

«math style=¨font-size:14px¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi mathvariant=¨normal¨»A«/mi»«mo»=«/mo»«mfenced»«mtable»«mtr»«mtd»«mn»1«/mn»«/mtd»«mtd»«mo»-«/mo»«mn»2«/mn»«/mtd»«mtd»«mn»0«/mn»«/mtd»«/mtr»«mtr»«mtd»«mn»3«/mn»«/mtd»«mtd»«mn»1«/mn»«/mtd»«mtd»«mo»-«/mo»«mn»2«/mn»«/mtd»«/mtr»«mtr»«mtd»«mo»-«/mo»«mn»1«/mn»«/mtd»«mtd»«mn»2«/mn»«/mtd»«mtd»«mo»-«/mo»«mn»1«/mn»«/mtd»«/mtr»«/mtable»«/mfenced»«mo»§#160;«/mo»«mi»§#351;i«/mi»«mo»§#160;«/mo»«mi mathvariant=¨normal¨»B«/mi»«mo»=«/mo»«mfenced»«mtable»«mtr»«mtd»«mn»2«/mn»«/mtd»«mtd»«mn»0«/mn»«/mtd»«mtd»«mn»1«/mn»«/mtd»«/mtr»«mtr»«mtd»«mo»-«/mo»«mn»1«/mn»«/mtd»«mtd»«mo»-«/mo»«mn»2«/mn»«/mtd»«mtd»«mn»3«/mn»«/mtd»«/mtr»«mtr»«mtd»«mo»-«/mo»«mn»2«/mn»«/mtd»«mtd»«mn»1«/mn»«/mtd»«mtd»«mo»-«/mo»«mn»1«/mn»«/mtd»«/mtr»«/mtable»«/mfenced»«/math».

Să se calculeze A·B.

]]> Răspunsul corect este: «math style=¨font-size:14px¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfenced»«mtable»«mtr»«mtd»«mn»4«/mn»«/mtd»«mtd»«mn»4«/mn»«/mtd»«mtd»«mo»-«/mo»«mn»5«/mn»«/mtd»«/mtr»«mtr»«mtd»«mn»9«/mn»«/mtd»«mtd»«mo»-«/mo»«mn»4«/mn»«/mtd»«mtd»«mn»8«/mn»«/mtd»«/mtr»«mtr»«mtd»«mo»-«/mo»«mn»2«/mn»«/mtd»«mtd»«mo»-«/mo»«mn»5«/mn»«/mtd»«mtd»«mn»6«/mn»«/mtd»«/mtr»«/mtable»«/mfenced»«/math»

]]> 1.0000000 1.0000000 0 0 44-59-48-2-56 ]]> <question><correctAnswers><correctAnswer type="mathml"><![CDATA[<math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mtable><mtr><mtd><mn>4</mn></mtd><mtd><mn>4</mn></mtd><mtd><mo>-</mo><mn>5</mn></mtd></mtr><mtr><mtd><mn>9</mn></mtd><mtd><mo>-</mo><mn>4</mn></mtd><mtd><mn>8</mn></mtd></mtr><mtr><mtd><mo>-</mo><mn>2</mn></mtd><mtd><mo>-</mo><mn>5</mn></mtd><mtd><mn>6</mn></mtd></mtr></mtable></mfenced><mo>&#160;</mo></math>]]></correctAnswer><correctAnswer id="1"></correctAnswer></correctAnswers><assertions><assertion name="syntax_expression"/><assertion name="equivalent_symbolic"/></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"></data></localData></question>