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anonymous

  • 4 years ago

Can someone help me with matrices?

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  1. anonymous
    • 4 years ago
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  2. Hero
    • 4 years ago
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    no :P

  3. anonymous
    • 4 years ago
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    Can you help me with Question #42

  4. anonymous
    • 4 years ago
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    LOL

  5. anonymous
    • 4 years ago
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    What are the steps?

  6. TuringTest
    • 4 years ago
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    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

  7. Hero
    • 4 years ago
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    i would help you, but I don't know the steps.

  8. anonymous
    • 4 years ago
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    Well I need to solve #42 LOL

  9. anonymous
    • 4 years ago
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    To find the inverse I use the identity matrix

  10. anonymous
    • 4 years ago
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    Ya hero I know :D

  11. Hero
    • 4 years ago
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    How come you didn't just use tutor.com?

  12. anonymous
    • 4 years ago
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    They dont know linear algebra

  13. Hero
    • 4 years ago
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    Yes they do, you just went to the wrong person

  14. TuringTest
    • 4 years ago
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    What did you get for the inverse of 4A ?

  15. anonymous
    • 4 years ago
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    No thsy give you (4A)^-1

  16. anonymous
    • 4 years ago
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    So I first divided by 1/4

  17. anonymous
    • 4 years ago
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    and then I used the identity matrix thingy

  18. Hero
    • 4 years ago
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    rld, how come you don't just read the book?

  19. TuringTest
    • 4 years ago
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    no that is the last step!

  20. anonymous
    • 4 years ago
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    LOL ok

  21. TuringTest
    • 4 years ago
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    dividing by 4 is last

  22. anonymous
    • 4 years ago
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    I knew I was doing it wrong

  23. anonymous
    • 4 years ago
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    My book never told me what to do lol

  24. TuringTest
    • 4 years ago
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    \[((4A)^{-1})^{-1}=4A\]then you can scalar divide by 4...

  25. anonymous
    • 4 years ago
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    Hey i can help you.

  26. Akshay_Budhkar
    • 4 years ago
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    am i allowed to help you?

  27. anonymous
    • 4 years ago
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    LOL Thanks turing :D How can u think while standing on ur head?

  28. anonymous
    • 4 years ago
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    Guys turing beat u lOL

  29. TuringTest
    • 4 years ago
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    Go ahead I though rld had it from here since he know the identity matrix trick...

  30. Akshay_Budhkar
    • 4 years ago
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    Turing cheated !! he answered before us

  31. anonymous
    • 4 years ago
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    Turing is amazing!

  32. Akshay_Budhkar
    • 4 years ago
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    :P

  33. TuringTest
    • 4 years ago
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    thought*

  34. TuringTest
    • 4 years ago
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    lol

  35. anonymous
    • 4 years ago
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    ya i know what to do from here lol

  36. Akshay_Budhkar
    • 4 years ago
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    i didnt read the question (anyways i dont know matrices as good as him)

  37. anonymous
    • 4 years ago
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    lol ya thanks guys :D

  38. Akshay_Budhkar
    • 4 years ago
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    thanks for thanking me as well

  39. anonymous
    • 4 years ago
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    I know a very fast method to find the inverse of 2X2 matrices.

  40. anonymous
    • 4 years ago
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    ok shoot

  41. anonymous
    • 4 years ago
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    Ideally it takes me about 5 seconds ;)

  42. TuringTest
    • 4 years ago
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    http://tutorial.math.lamar.edu/Classes/LinAlg/FindingInverseMatrices.aspx I'm guessing you're thinking theorem 4 on this page

  43. anonymous
    • 4 years ago
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    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

  44. Akshay_Budhkar
    • 4 years ago
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    ok so now u tell Fool to help.. cant i and turing help?

  45. anonymous
    • 4 years ago
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    LOL the more the merrier

  46. anonymous
    • 4 years ago
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    ya i know that shortcut

  47. anonymous
    • 4 years ago
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    At least i know something

  48. Akshay_Budhkar
    • 4 years ago
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    so y ou r telling me that... Akshay atleast i know something, not like you

  49. anonymous
    • 4 years ago
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    Yep exactly that Turing :)

  50. anonymous
    • 4 years ago
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    LOL No i feel stupid around u guys so like at least i know something

  51. razor99
    • 4 years ago
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    the maths u do is very difficult

  52. Hero
    • 4 years ago
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    rld, just post all your questions here so I can learn linear algebra before taking it

  53. anonymous
    • 4 years ago
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    LOL Linear algebra is like easy once you get it. So like I only post one in like 15 questions

  54. Hero
    • 4 years ago
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    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.

  55. razor99
    • 4 years ago
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    gotta run guyz i have to got to the hospital

  56. anonymous
    • 4 years ago
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    HUH????? @razor

  57. anonymous
    • 4 years ago
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    In words the adjoint of a 2X2 matrix can be found by swapping the diagonal elements and changing the sign of the off-diagonals.

  58. anonymous
    • 4 years ago
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    Alrighty fool

  59. Akshay_Budhkar
    • 4 years ago
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    yea we were taught that in grade 12 @fool

  60. anonymous
    • 4 years ago
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    lol I never learn that in grade 12

  61. anonymous
    • 4 years ago
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    Wow great akshay I never passed my grade 12 :P

  62. Akshay_Budhkar
    • 4 years ago
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    yea yea that is why u r in iit.. i passed that is why i am not in iit :P -_-

  63. razor99
    • 4 years ago
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    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

  64. anonymous
    • 4 years ago
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    ok Thanks Guys (espeially turing) for ur help gotta go study otherwse wont get to sleep tonite

  65. anonymous
    • 4 years ago
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    Yes, you are right Akshay, now you have established that IIT takes poor students like me :P

  66. anonymous
    • 4 years ago
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    LOL @FOOL

  67. Akshay_Budhkar
    • 4 years ago
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    LOL

  68. Akshay_Budhkar
    • 4 years ago
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    especially turing? i helped u as well.. 1+1=2

  69. anonymous
    • 4 years ago
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    idk fight it out with turing

  70. anonymous
    • 4 years ago
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    Of-course she will thank Turing, he is one with pic ;)

  71. Akshay_Budhkar
    • 4 years ago
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    LOLL

  72. anonymous
    • 4 years ago
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    LOL no cuz he is upside down

  73. Akshay_Budhkar
    • 4 years ago
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    ok i need to change my pic!! :P

  74. Akshay_Budhkar
    • 4 years ago
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    turing is feeling shy?

  75. Akshay_Budhkar
    • 4 years ago
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    why is he not asnwering?

  76. anonymous
    • 4 years ago
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    LOL Turing isnt shy

  77. anonymous
    • 4 years ago
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    lol not fair akshay stop hitting on her:P She clearly likes Turing not us :P

  78. Akshay_Budhkar
    • 4 years ago
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    how do you know?

  79. Akshay_Budhkar
    • 4 years ago
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    ok i accept the face fool that we are FOOLS turing isn't :P

  80. TuringTest
    • 4 years ago
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    I am always sort of doing something else... I just found what the person was missing in the problem is all

  81. anonymous
    • 4 years ago
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    LOL Tuirng is very modest. turing they are just joking around. Dont even argue with them LOL

  82. Akshay_Budhkar
    • 4 years ago
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    Turing is modest and we are jokers?

  83. razor99
    • 4 years ago
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    are u stressed

  84. Akshay_Budhkar
    • 4 years ago
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    just because he has a pic?

  85. anonymous
    • 4 years ago
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    That's mean Rld :P

  86. anonymous
    • 4 years ago
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    K guys gottta go. Otherwise i wont have time to spend with my

  87. Akshay_Budhkar
    • 4 years ago
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    my..

  88. anonymous
    • 4 years ago
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    family and friends

  89. Akshay_Budhkar
    • 4 years ago
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    LOl

  90. anonymous
    • 4 years ago
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    Turing :P

  91. Akshay_Budhkar
    • 4 years ago
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    LOL

  92. anonymous
    • 4 years ago
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    Guys u r crazy

  93. razor99
    • 4 years ago
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    rld did u get your answre

  94. Akshay_Budhkar
    • 4 years ago
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    jokers---> crazy

  95. anonymous
    • 4 years ago
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    I seriously am not like that

  96. anonymous
    • 4 years ago
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    No I am just a Fool ;)

  97. anonymous
    • 4 years ago
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    Ask lana

  98. Akshay_Budhkar
    • 4 years ago
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    i am following his footsteps :P

  99. Akshay_Budhkar
    • 4 years ago
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    Lalaly

  100. anonymous
    • 4 years ago
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    LOL Guys it was great chatting with u.

  101. Akshay_Budhkar
    • 4 years ago
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    goodnight

  102. Akshay_Budhkar
    • 4 years ago
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    Great ppl grat chats :D ;)

  103. anonymous
    • 4 years ago
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    Bye I may be back :D

  104. razor99
    • 4 years ago
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    what is the time in your country

  105. anonymous
    • 4 years ago
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    And if I have time I will also do some calc

  106. Akshay_Budhkar
    • 4 years ago
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    11:08 pm

  107. anonymous
    • 4 years ago
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    razor I got my answer

  108. Akshay_Budhkar
    • 4 years ago
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    calc!!!!!! i can help u in that :P

  109. razor99
    • 4 years ago
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    good night

  110. anonymous
    • 4 years ago
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    ya but i gotta go otherwise I wont be able to start BYE EVERYONE (INCLUDING ZARKON)

  111. razor99
    • 4 years ago
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    our country almost 9 am

  112. anonymous
    • 4 years ago
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    Bye :)

  113. Akshay_Budhkar
    • 4 years ago
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    Zarkon is so quite

  114. Zarkon
    • 4 years ago
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    yep

  115. pokemon23
    • 4 years ago
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    Hero I'm scared

  116. Akshay_Budhkar
    • 4 years ago
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    Zarkon!

  117. Akshay_Budhkar
    • 4 years ago
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    i am so happy that u r talking :P

  118. Hero
    • 4 years ago
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    Scared of what? The boogie man?

  119. pokemon23
    • 4 years ago
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    no anonymous

  120. pokemon23
    • 4 years ago
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    http://www.youtube.com/watch?v=N2WqU-HvyUI&feature=g-logo&context=G2d684acFOAAAAAAAXAA

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