Dapper Projection Which columns contain pivots? What is a basis for the column space? (A3, A4, A5, D6) 3. Find the projection of [1,2,1,2] onto the plane x+y+z+w = 0. Explain your reasoning! (B3, B7, B8, C17, C19) 4. State the deﬁnition of vector space. (C1) 5. Find the standard matrix representation (i.e. the representation with respect to the standard Column count - Storage Spaces writes data across multiple disks in chunks called stripes. The number of disks in a stripe is called the column count. Increasing the column count increases the number of physical disks across which a virtual disk is striped, which increases throughput and IOPS for that virtual disk. However, it can also increase ... May 18, 2015 · The next problem is to define the “best” p, and the projection of b onto column space A is used instead. And then we need to find a way to calculate the projected vector p from b . For simplicity, we first consider projection from vector to vector (see the left diagram above).