- #1
Renzokuken
- 14
- 0
Homework Statement
is B in subspace R^2
B=[x] :x^2+y^2<=1
[y]
Homework Equations
1.0∈B
2.if u,v∈B u+v∈B
3.if u∈A a∈B then au∈B
The Attempt at a Solution
The <= is confusing me. I am not sure if i am suppose to treat it like an equal sign, or is it automatically not in the subspace?
if i treat it like a equal sign
0^2+0^2=0
u^2+uv+v^2 + u^2+uv+v^2 = 0
0+0=0
(au)^2+(au)^2=0
0^2+0^2=0
so B is in R^2