Problem 1. Show that, if v₁, U2, U3 are perpendicular in R", then ||v₁ + V2 + v3||² = ||v₁||² + ||v₂||² + ||v3||² (Hint:
Posted: Thu Jun 30, 2022 7:34 pm
Problem 1. Show that, if v₁, U2, U3 are perpendicular in R", then ||v₁ + V2 + v3||² = ||v₁||² + ||v₂||² + ||v3||² (Hint: first show that the analogous formula is true for two perpendicular vectors.)