Math Problem Statement
1. SoientA= 0 −1 ,B= 231 ,C= 0 3 ,D=2 010 ,E= −30 .Calculertouteslessommes 1 −4 321 −312 111 −86 possiblesdedeuxdecesmatrices.Calculer3A+2C et5B−4D.TrouverαtelqueA−αC soitlamatrice nulle. 2. Montrer que si A + B = A, alors B est la matrice nulle. 3. Quevaut0·A?et1·A?Justifierl’affirmation:α(βA)=(αβ)A.IdemavecnA=A+A+···+A(n occurrences de A).
Solution
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Math Problem Analysis
Mathematical Concepts
Matrix Addition
Matrix Scalar Multiplication
Matrix Equations
Formulas
Matrix addition: A + B = [ [a11 + b11, a12 + b12], [a21 + b21, a22 + b22] ]
Scalar multiplication: kA = [ [k*a11, k*a12], [k*a21, k*a22] ]
Solving matrix equations: A - αC = 0
Theorems
Associative Property of Scalar Multiplication: α(βA) = (αβ)A
Zero Matrix Property: A + 0 = A
Matrix Nullity: A - αC = 0 if all corresponding elements are equal
Suitable Grade Level
College level or Advanced High School (Grades 11-12)
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