Question

determine as matrizes a=(aij)2×3,aij= i2+j2

Answer 1

matriz 2 x 3 = 2 linhas, 3 colunas
A[i,j] = i² + j²

A[1,1] = 1² + 1² = 2
A[1,2] = 1² + 2² = 5
A[1,3] = 1² + 3² = 10
A[2,1] = 2² + 1² = 5
A[2,1] = 2² + 2² = 8 
A[2,3] = 2² + 3² = 13

a matriz fica assim

$\left[\begin{array}{ccc}2&5&10\\5&8&3\end{array}\right]$