A community for students.
Here's the question you clicked on:
 0 viewing
Calcmathlete
 3 years ago
Matrix Help!
Calcmathlete
 3 years ago
Matrix Help!

This Question is Closed

agentc0re
 3 years ago
Best ResponseYou've already chosen the best response.0what type of math class is this?

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1It's math team :) But it is Algebra II

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2I guess this is what you wanted :) dw:1343828412416:dw

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1Wait, what? o.O I understand what you did when you did the cofactor part, but not after that.

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2tell me on my drawing wht didnt u understand please

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1dw:1343828609211:dw Also, that wasn't the answer they gave?

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1Or was that just a part of the process?

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2just calculations O.odw:1343828726092:dw

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1How does that work? o.O Sorry, I just haven't done TOO much with matrices yet...

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2Hmmmm....im sorry i am not sure how to explain you why it is like that....:( it just is like that hmmmm....u can try these...they r pretty good http://www.khanacademy.org/math/algebra/algebramatrices?k

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1Well, the final answer is a matrix...can you tell me what topic for matrices to watch? I've watched all of them to the extent of Algebra II material.

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2Hmmmm....maybe I've misunderstood wht u want to find... hang on a sec

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2watch inverting matrices

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1Wouldn't the inverse be \[\left[\begin{matrix}2 & 1 \\ 4 & 4\end{matrix}\right]\]

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1Or do I multiply by the reciprocal of the determinant?

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2tell me smth u want to find the inverse of the dw:1343829407799:dw

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1Would I perform this: \[\frac1{12}\left[\begin{matrix}2 & 1 \\ 4 & 4\end{matrix}\right]\]

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1Yes. I want to find the inverse of what's above in your picture.

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2learnt this At Khan's videos so jusat plug in the numbers now dw:1343829481250:dw

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2or read this...is very well explained http://dcann.myweb.uga.edu/lect08add.pdf

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1Isn't that what I did above? dw:1343829681330:dw

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1Alright, so the answer would be: \[\left[\begin{matrix}\frac16 & \frac1{12} \\ \frac13 & \frac13\end{matrix}\right]\]

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2shouldnt it be dw:1343830119553:dw

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1Is there supposed to an aboslute value on the A? not sure...I thought that a and d switched places and that b and c negated...maybe I'm wrong?

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1So it would be correct what I did?

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2hang on a sec pls...im on the phone

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2i said so...from the second link i sent u

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1Wait. Let me check the link...

Calcmathlete
 3 years ago
Best ResponseYou've already chosen the best response.1I have not gone that far into matrices quite yet...haven't learned to transpose... _

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2it was as u said...sorry...it's too hot in here _'' I'm not thinking well :p dw:1343830633083:dw

angela210793
 3 years ago
Best ResponseYou've already chosen the best response.2dw:1343830704511:dw
Ask your own question
Sign UpFind 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
 Engagement 19 Mad Hatter
 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.