anonymous
  • anonymous
Can someone help me with matrices?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
1 Attachment
Hero
  • Hero
no :P
anonymous
  • anonymous
Can you help me with Question #42

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More answers

anonymous
  • anonymous
LOL
anonymous
  • anonymous
What are the steps?
TuringTest
  • TuringTest
what's the difference between that and #41 ? find the inverse then divide by the constant to get A there are quite a few ways to find the inverse
Hero
  • Hero
i would help you, but I don't know the steps.
anonymous
  • anonymous
Well I need to solve #42 LOL
anonymous
  • anonymous
To find the inverse I use the identity matrix
anonymous
  • anonymous
Ya hero I know :D
Hero
  • Hero
How come you didn't just use tutor.com?
anonymous
  • anonymous
They dont know linear algebra
Hero
  • Hero
Yes they do, you just went to the wrong person
TuringTest
  • TuringTest
What did you get for the inverse of 4A ?
anonymous
  • anonymous
No thsy give you (4A)^-1
anonymous
  • anonymous
So I first divided by 1/4
anonymous
  • anonymous
and then I used the identity matrix thingy
Hero
  • Hero
rld, how come you don't just read the book?
TuringTest
  • TuringTest
no that is the last step!
anonymous
  • anonymous
LOL ok
TuringTest
  • TuringTest
dividing by 4 is last
anonymous
  • anonymous
I knew I was doing it wrong
anonymous
  • anonymous
My book never told me what to do lol
TuringTest
  • TuringTest
\[((4A)^{-1})^{-1}=4A\]then you can scalar divide by 4...
anonymous
  • anonymous
Hey i can help you.
Akshay_Budhkar
  • Akshay_Budhkar
am i allowed to help you?
anonymous
  • anonymous
LOL Thanks turing :D How can u think while standing on ur head?
anonymous
  • anonymous
Guys turing beat u lOL
TuringTest
  • TuringTest
Go ahead I though rld had it from here since he know the identity matrix trick...
Akshay_Budhkar
  • Akshay_Budhkar
Turing cheated !! he answered before us
anonymous
  • anonymous
Turing is amazing!
Akshay_Budhkar
  • Akshay_Budhkar
:P
TuringTest
  • TuringTest
thought*
TuringTest
  • TuringTest
lol
anonymous
  • anonymous
ya i know what to do from here lol
Akshay_Budhkar
  • Akshay_Budhkar
i didnt read the question (anyways i dont know matrices as good as him)
anonymous
  • anonymous
lol ya thanks guys :D
Akshay_Budhkar
  • Akshay_Budhkar
thanks for thanking me as well
anonymous
  • anonymous
I know a very fast method to find the inverse of 2X2 matrices.
anonymous
  • anonymous
ok shoot
anonymous
  • anonymous
Ideally it takes me about 5 seconds ;)
TuringTest
  • TuringTest
http://tutorial.math.lamar.edu/Classes/LinAlg/FindingInverseMatrices.aspx I'm guessing you're thinking theorem 4 on this page
anonymous
  • anonymous
Fool u will be able to help me I am not finished my work. I have another few hours of linear algebra. I am not going to bed for another few hours so like stick around LOL
Akshay_Budhkar
  • Akshay_Budhkar
ok so now u tell Fool to help.. cant i and turing help?
anonymous
  • anonymous
LOL the more the merrier
anonymous
  • anonymous
ya i know that shortcut
anonymous
  • anonymous
At least i know something
Akshay_Budhkar
  • Akshay_Budhkar
so y ou r telling me that... Akshay atleast i know something, not like you
anonymous
  • anonymous
Yep exactly that Turing :)
anonymous
  • anonymous
LOL No i feel stupid around u guys so like at least i know something
razor99
  • razor99
the maths u do is very difficult
Hero
  • Hero
rld, just post all your questions here so I can learn linear algebra before taking it
anonymous
  • anonymous
LOL Linear algebra is like easy once you get it. So like I only post one in like 15 questions
Hero
  • Hero
By the way, on tutor.com a guy named Ewain G. is the smartest person on there. He will help you with anything math related no matter how difficult.
razor99
  • razor99
gotta run guyz i have to got to the hospital
anonymous
  • anonymous
HUH????? @razor
anonymous
  • anonymous
In words the adjoint of a 2X2 matrix can be found by swapping the diagonal elements and changing the sign of the off-diagonals.
anonymous
  • anonymous
Alrighty fool
Akshay_Budhkar
  • Akshay_Budhkar
yea we were taught that in grade 12 @fool
anonymous
  • anonymous
lol I never learn that in grade 12
anonymous
  • anonymous
Wow great akshay I never passed my grade 12 :P
Akshay_Budhkar
  • Akshay_Budhkar
yea yea that is why u r in iit.. i passed that is why i am not in iit :P -_-
razor99
  • razor99
A = 1.00 2.00 3.00 4.00 Determinant det(A) = 1.00 2.00 3.00 4.00 = -2 The Inverse Matrix of A is: A-1 = -2.00 1.00 1.50 -0.50
anonymous
  • anonymous
ok Thanks Guys (espeially turing) for ur help gotta go study otherwse wont get to sleep tonite
anonymous
  • anonymous
Yes, you are right Akshay, now you have established that IIT takes poor students like me :P
anonymous
  • anonymous
LOL @FOOL
Akshay_Budhkar
  • Akshay_Budhkar
LOL
Akshay_Budhkar
  • Akshay_Budhkar
especially turing? i helped u as well.. 1+1=2
anonymous
  • anonymous
idk fight it out with turing
anonymous
  • anonymous
Of-course she will thank Turing, he is one with pic ;)
Akshay_Budhkar
  • Akshay_Budhkar
LOLL
anonymous
  • anonymous
LOL no cuz he is upside down
Akshay_Budhkar
  • Akshay_Budhkar
ok i need to change my pic!! :P
Akshay_Budhkar
  • Akshay_Budhkar
turing is feeling shy?
Akshay_Budhkar
  • Akshay_Budhkar
why is he not asnwering?
anonymous
  • anonymous
LOL Turing isnt shy
anonymous
  • anonymous
lol not fair akshay stop hitting on her:P She clearly likes Turing not us :P
Akshay_Budhkar
  • Akshay_Budhkar
how do you know?
Akshay_Budhkar
  • Akshay_Budhkar
ok i accept the face fool that we are FOOLS turing isn't :P
TuringTest
  • TuringTest
I am always sort of doing something else... I just found what the person was missing in the problem is all
anonymous
  • anonymous
LOL Tuirng is very modest. turing they are just joking around. Dont even argue with them LOL
Akshay_Budhkar
  • Akshay_Budhkar
Turing is modest and we are jokers?
razor99
  • razor99
are u stressed
Akshay_Budhkar
  • Akshay_Budhkar
just because he has a pic?
anonymous
  • anonymous
That's mean Rld :P
anonymous
  • anonymous
K guys gottta go. Otherwise i wont have time to spend with my
Akshay_Budhkar
  • Akshay_Budhkar
my..
anonymous
  • anonymous
family and friends
Akshay_Budhkar
  • Akshay_Budhkar
LOl
anonymous
  • anonymous
Turing :P
Akshay_Budhkar
  • Akshay_Budhkar
LOL
anonymous
  • anonymous
Guys u r crazy
razor99
  • razor99
rld did u get your answre
Akshay_Budhkar
  • Akshay_Budhkar
jokers---> crazy
anonymous
  • anonymous
I seriously am not like that
anonymous
  • anonymous
No I am just a Fool ;)
anonymous
  • anonymous
Ask lana
Akshay_Budhkar
  • Akshay_Budhkar
i am following his footsteps :P
Akshay_Budhkar
  • Akshay_Budhkar
Lalaly
anonymous
  • anonymous
LOL Guys it was great chatting with u.
Akshay_Budhkar
  • Akshay_Budhkar
goodnight
Akshay_Budhkar
  • Akshay_Budhkar
Great ppl grat chats :D ;)
anonymous
  • anonymous
Bye I may be back :D
razor99
  • razor99
what is the time in your country
anonymous
  • anonymous
And if I have time I will also do some calc
Akshay_Budhkar
  • Akshay_Budhkar
11:08 pm
anonymous
  • anonymous
razor I got my answer
Akshay_Budhkar
  • Akshay_Budhkar
calc!!!!!! i can help u in that :P
razor99
  • razor99
good night
anonymous
  • anonymous
ya but i gotta go otherwise I wont be able to start BYE EVERYONE (INCLUDING ZARKON)
razor99
  • razor99
our country almost 9 am
anonymous
  • anonymous
Bye :)
Akshay_Budhkar
  • Akshay_Budhkar
Zarkon is so quite
Zarkon
  • Zarkon
yep
pokemon23
  • pokemon23
Hero I'm scared
Akshay_Budhkar
  • Akshay_Budhkar
Zarkon!
Akshay_Budhkar
  • Akshay_Budhkar
i am so happy that u r talking :P
Hero
  • Hero
Scared of what? The boogie man?
pokemon23
  • pokemon23
no anonymous
pokemon23
  • pokemon23
http://www.youtube.com/watch?v=N2WqU-HvyUI&feature=g-logo&context=G2d684acFOAAAAAAAXAA

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