typo in Chapter 8.6 on page 217 and page 218

[PhilPuglisi]

At the top of page 217 in the 2nd example, the vector of four 1's should be a vector of 5 1's.
The "A" vector is 2 x 5, so the "Y" vector needs to be 5 x 1

For the same "A" matrix as above, on page 218 (8.17) the right hand side is a row of 4 zeros.
I think it should be a row of 5 zeros.

[mikexcohen]

Thank you, Phil, for your careful read. A colleague and I have been going through the book for these kinds of small typos. I hope to release a new edition soon, probably early November.