- #1
srfriggen
- 307
- 7
Homework Statement
Let V be a vector space and v, w two elements of V. If v+w=O, show that w=-v
Homework Equations
The Attempt at a Solution
This is my attempt:
1. v+w=O
2. v+(-v)=O
3. v+w=v+(-v). Subtracting v from both sides yields:
4. w=-v
The solution manual has this as the correct answer:
-w=-w+O=-w+(v+w)=v+w-w=v
Is my attempt correct as well?