combinepdf-min-0229.pdf

# combinepdf-min-0229.pdf - Notes on linear algebra(Monday...

• Test Prep
• 1

This preview shows page 1 out of 1 page.

You've reached the end of this preview.

Unformatted text preview: Notes on linear algebra (Monday 17th October, 2016, 23:10) page 76 Proposition 3.44. Let a E N, m E IN and p E N. Let a 6 {1,2,...,a} and o E {1,2,...,m}. Let C be an m x p-matrix. Then, EHIﬂC is the a x p-matrix whose a-th row is the v-th row of C. and whose all other rows are ﬁlled with zeroes. (Here. again, Ear; means Emmfm.) a b (3 Example 3.45. Let a = 2, m = 3 and p = 3. Let C = a’ b’ c’ be a a” bf! CH 3 X 3-matrix. Proposition 3.44 (applied to a = 1 and U = 2) claims that ELZC is the 2 X 3-matrix whose 1-st row is the 2-nd row of C, and whose all other rows are filled with zeroes. In other words, it claims that a’b’c I We can verify this by actually doing the multiplication: a b c ELZC = ( g (1) g ) a“ l?! C! ﬂ!!! lyxr r: c _ / 03+1HI+ORH Ob+1bi+0b” Oc+1ci+00”\ ...
View Full Document

• Fall '09

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern