Math Problem Statement
dada las matrices A = (3+7i 0 ; 2i 4-i) y B=(1+i 1-i ; 1-i 1+i) obtenga la determinante (AB-2B)
Solution
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Math Problem Analysis
Mathematical Concepts
Matrix Multiplication
Complex Numbers
Determinants
Formulas
Matrix multiplication: AB = (a11 * b11 + a12 * b21, a11 * b12 + a12 * b22; a21 * b11 + a22 * b21, a21 * b12 + a22 * b22)
Determinant of a 2x2 matrix: det(A) = ad - bc
Complex number multiplication: (a + bi)(c + di) = ac + adi + bci + bdi^2
Theorems
Determinant Calculation for 2x2 Matrices
Properties of Complex Numbers
Suitable Grade Level
Undergraduate Level (Linear Algebra)
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