Determinant de ordinul doi

Flashcard
•
Mathematics
•
11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Ce este un determinant de ordinul doi?
Back
Un determinant de ordinul doi este o funcție care asociază o matrice 2x2 cu un număr real sau complex, calculat prin formula: det(A) = ad - bc, unde A = [[a, b], [c, d]].
2.
FLASHCARD QUESTION
Front
Cum se calculează determinantul unei matrice 2x2?
Back
Determinantul unei matrice 2x2, A = [[a, b], [c, d]], se calculează folosind formula: det(A) = ad - bc.
3.
FLASHCARD QUESTION
Front
Care este determinantul matricei A = [[1, 2], [3, 4]]?
Back
Determinantul este det(A) = (1*4) - (2*3) = 4 - 6 = -2.
4.
FLASHCARD QUESTION
Front
Care este determinantul matricei A = [[0, 1], [0, 0]]?
Back
Determinantul este det(A) = (0*0) - (1*0) = 0.
5.
FLASHCARD QUESTION
Front
Ce se întâmplă cu determinantul dacă o linie a matricei este multiplicată cu un scalar?
Back
Dacă o linie a matricei este multiplicată cu un scalar k, determinantul se multiplică cu k.
6.
FLASHCARD QUESTION
Front
Ce se întâmplă cu determinantul dacă două linii ale matricei sunt interschimbate?
Back
Dacă două linii ale matricei sunt interschimbate, semnul determinantului se schimbă.
7.
FLASHCARD QUESTION
Front
Care este determinantul matricei A = [[2, 3], [1, 4]]?
Back
Determinantul este det(A) = (2*4) - (3*1) = 8 - 3 = 5.
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