Question 1
What are the three requirements for a subset $W$ to be a subspace of a vector space $V$?
Question 2
Which of the following sets is a subspace of $\mathbb{R}^2$?
Question 3
Is the set $\{0\}$ a subspace of any vector space?
Question 4
Which set is a subspace of $\mathbb{R}^3$?
Question 5
Which set is a subspace of $P_2$?