Mampac
New member
- Joined
- Nov 20, 2019
- Messages
- 48
For some vectors u and v in Rn and a scalar a belonging to R, prove that
u ⋅ (av) = a(u ⋅ v)
WITHOUT using the definition of the dot product!
I know this is some very simple and basic stuff, but I see no way of proceeding after I consider that av has coordinates [ax1, ax2, ... axn]. What do I do after that if I can't open up the ⋅s using the dot product?
u ⋅ (av) = a(u ⋅ v)
WITHOUT using the definition of the dot product!
I know this is some very simple and basic stuff, but I see no way of proceeding after I consider that av has coordinates [ax1, ax2, ... axn]. What do I do after that if I can't open up the ⋅s using the dot product?