anonymous
  • anonymous
Use the Matrices A,B,C, and D for the problems below
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
|dw:1371161873103:dw|
anonymous
  • anonymous
Problems: find each: (a) B-2A (b) det C (c) D^-1 (d) DB (e) C^-1 (f) det D
anonymous
  • anonymous
If somebody could maybe just show me how to do one or two of these that would be great

Looking for something else?

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

More answers

Loser66
  • Loser66
first of all, tell me 2A= ??
anonymous
  • anonymous
do you just multiply everything in A's brackets by 2?
Loser66
  • Loser66
yeap
Loser66
  • Loser66
show me your work, please
anonymous
  • anonymous
|dw:1371162958043:dw| like this?
Loser66
  • Loser66
yes, now make subtraction between B and 2A. If you don't know, just arrange the order.
anonymous
  • anonymous
|dw:1371163108248:dw|
Loser66
  • Loser66
You got it, no need to ask for help, Get rolling friend. hehehe
anonymous
  • anonymous
ok I thought it was way harder but can I still check my answers with you when I'm done?
Loser66
  • Loser66
sure!!
anonymous
  • anonymous
what is det?
Loser66
  • Loser66
that is determinant of the matrix. you have formula to get det. google if you want to know everything; ask me if you just want some of the cases.
anonymous
  • anonymous
is that this http://www.youtube.com/watch?v=C4yNX4jjHsk
Loser66
  • Loser66
here http://www.wikihow.com/Find-the-Determinant-of-a-3X3-Matrix
anonymous
  • anonymous
detC= 156
anonymous
  • anonymous
|dw:1371228277913:dw|
anonymous
  • anonymous
DB =|dw:1371229041589:dw|
anonymous
  • anonymous
|dw:1371229466051:dw|
anonymous
  • anonymous
det D= 10
Loser66
  • Loser66
I can't see clearly your C, can you re write it? to calculate det C
Loser66
  • Loser66
\[\left[\begin{matrix}2 & 1&1 \\ -2 & -4&-6\\0&3&1\end{matrix}\right]\] Is it your C?
anonymous
  • anonymous
yes that is C
Loser66
  • Loser66
then, take a look at http://www.bluebit.gr/matrix-calculator/calculate.aspx it said det C =24
anonymous
  • anonymous
hhmm I'll redo that one. what about the rest?
Loser66
  • Loser66
you can check by yourself by that site.

Looking for something else?

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