Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

hali12

  • 2 years ago

PLEASE HELP!!! Does anyone know how to do "Matrices" It's in algebra

  • This Question is Closed
  1. hali12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 Attachment
  2. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[spose:~A=(a_1~a_2)~and~B=\binom{b_1}{b_2}~then~AB=a_1b_1+a_2b_2\]

  3. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    if we let A have so many Rows, and B have so many columns then: then AB is: \[Row_1.Col_1~~Row_1C.Col_2~~Row_1.Col_3\\ Row_2.Col_1~~Row_2C.Col_2~~Row_2.Col_3\\ Row_3.Col_1~~Row_3C.Col_2~~Row_3.Col_3\\ \]

  4. jon.stromer.galley
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    To multiply A and B you can think of sending the rows of B into the columns of A by kind of rotating B counter clockwise. In your diagram, the result of AxB will be a 3x3 matrix as follows: (8*5 + 2*6), (0*5 + 6*6), (-3*5 + 4*6) (8*2 + 2*3), (0*2 + 6*3), (-3*2 + 4*3) (8*-4 + 2*0), (0*-4 + 6*0), (-3*-4 + 4*0)

  5. hali12
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what one is that for?

  6. jon.stromer.galley
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Question (7) specifically, but the technique can be used in general and is what Amistre64 has stated quite nicely.

  7. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.