Question

Dada as matrizes: A= 3 2,B= 4 1, C= -2 1
Calcule:

a) A-B+2X -C=0

b) 2x+A= 3.B- 1/2 C

c) 2x(x+A)-=1/2(2B-C)

d) x+2A=3(B+C)

Answer 1

Boa noite

Dada as matrizes:

A= (3,2)
B= (4,1)
C= (-2,1)

Calcule:

a) A - B + 2X - C = 0

2X = B + C - A = (4-2-3, 1+1-2) =  (-1, 0)
X = (-1/2, 0)

b) 2X + A= 3B -  C/2 

2X = 3B - A - C/2 = (12-3+2/2 , 3-2-1/2) = (10, 1/2)
X = (5, 1/4)

c) 2(X+A)-=(2B - C)/2
 
    2X + 2A = B - C/2
    2X = B - 2A - C/2 (4 -6+1,1-4-1/2= (-1, -7/2)

d) X + 2A = 3(B+C)
    X = 3*(B+C) - 2A = (3*2-2*3, 3*2-2*2) = (0,2)