Question

Determine uma matriz de ordem 3 X 3, A = [aij] com aij = (-1)i+j . i . j

Answer 1

Ola Thais

aij = (-1)^(i+j) * i * j

A(1,1) = (-1)^2 * 1 * 1 = 1
A(1,2) = (-1)^3 * 1 * 2 = -2
A(1,3) = (-1)^4 * 1 * 3 = 3

A(2,1) = (-1)^3 * 2 * 1 = -2
A(2,2) = (-1)^4 * 2 * 2 = 4
A(2,3) = (-1)^5 * 2 * 3 = -6

A(3,1) = (-1)^4 * 3 * 1 = 3
A(3,2) = (-1)^5 * 3 * 2 = -6
A(3,3) = (-1)^6 * 3 * 3 = 9