Question

Sendo A = (aij)1x3 tal que a ij=2i - j e B = (bij)1x3 tal que bij= -i + j + 1, calcule A+B.

Answer 1

a11 = 2.1-1 = 1
a12 = 2.1-2 = 0
a13 = 2.1-3=-1
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b11=-1+1+1=1
b12=-1+2+1=2
b13=-1+3+1=3
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A = [1  0  -1]
B = [1  2   3]

A + B = [1+1   0+2   -1+3]

A + B = [2   2  2]