MATH 54 QUIZ 7-
1. Find the dimension of the subspace H ⊂ R4 given by all vectors of the form
![687_Figure.png](https://secure.tutorsglobe.com/CMSImages/687_Figure.png)
where w, x, y, z are any real numbers.
2. If A is a 3 × 5 matrix, what is the largest possible dimension of Row(A)? What is the largest possible dimension of Nul(A)?