determine a matriz inversa de cada matriz B= [ 3 1 /5 2
Soluções para a tarefa
Respondido por
3
####################################
Método só para matrizes 2x2 , o nosso caso
B=
a b
c d
B-¹ =
(1/det B) * (d -b)
(-c a)
######################################
B=
3 1
5 2
det= 3*2-5*1 =6-5=1 ≠ 0 tem inversa
B-¹=
(1/1) * (2 -1) =(2 -1)
(-5 3) (-5 3)
Método só para matrizes 2x2 , o nosso caso
B=
a b
c d
B-¹ =
(1/det B) * (d -b)
(-c a)
######################################
B=
3 1
5 2
det= 3*2-5*1 =6-5=1 ≠ 0 tem inversa
B-¹=
(1/1) * (2 -1) =(2 -1)
(-5 3) (-5 3)
gracielepantoja:
OBRIGADO
Perguntas interessantes