{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

lec1_2 - NOTES ON SECTION 1.2 MA265 Overview this section...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
NOTES ON SECTION 1 . 2 MA265, SECTIONS 41, 52 Overview: this section introduces systems of equations, summarizes the solution process, and describes the possible solution sets. Key words Matrix Equal matrices difference of matrices rows n -vector summation notation columns R n , C n Index of summation size of a matrix 0 , zero vector linear combination square matrix Google coefficients main diagonal addition of matrices transpose entry of a matrix scalar multiple A matrix is a box of numbers, e.g.: B = 1 3 π e - 2 3 . 122 0 0 0 ln(2) ln( π ) e π This matrix has 4 rows and 3 columns . We say it has size 4 × 3. The 2 nd row is e - 2 3 . 122 and the 3 rd column is π 3 . 122 0 e π A general matrix looks like this: A = a 11 a 12 . . . a 1 n a 21 a 22 . . . a 2 n a 31 a 32 . . . a 3 n . . . . . . . . . a m 1 a m 2 . . . a mn The i th row is a i 1 a i 2 . . . a in and the j th column is a 1 j a 2 j a 3 j .
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern