Prévia do material em texto
1.57. Determina si los siguientes pares de vectores son ortogonales entre śı. Para determinar si un par de vectores son ortogonales entre si, su producto punto debe ser igual a cero. a) (1, 1, 1, 1, 1) y (−1,−1,−1,−1,−1) (1, 1, 1, 1, 1) · (−1,−1,−1,−1,−1) = (−1)(1) + (−1)(1) + (−1)(1) + (−1)(1) + (−1)(1) = −1− 1− 1− 1− 1 = −5 ̸= 0 b) (1, 1, 1, 1) y (−1,−1,−1, 3) (1, 1, 1, 1) · (−1,−1,−1, 3) = (−1)(1) + (−1)(1) + (−1)(1) + (3)(1) = −1− 1− 1 + 3 = 0 c) (1, 1, 1) y (−1, 2,−1). (1, 1, 1) · (−1, 2,−1, ) = (−1)(1) + (2)(1) + (−1)(1) = −1 + 2− 1 = 0 ∴ solo b) y c) son vectores ortogonales entre si. 1