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Akshay_Budhkar

A bit of tricky question on complex numbers.. try it guys for fun.. What are the answers to 1.√(-1 * -1) and 2.√(-1)*√(-1) a.1 b.-1....

  • 2 years ago
  • 2 years ago

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  1. Raioner
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    1. 1

    • 2 years ago
  2. Raioner
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    2.1i^2=-1

    • 2 years ago
  3. Akshay_Budhkar
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    myininaya i wanted others to answer it.. lol!!!

    • 2 years ago
  4. myininaya
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    oops i can delete

    • 2 years ago
  5. myininaya
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    lol

    • 2 years ago
  6. Raioner
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    myinaya can you take a look at my problem i had a couple days ago?

    • 2 years ago
  7. myininaya
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    sure is it a quick one i have to go to bed

    • 2 years ago
  8. Akshay_Budhkar
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    Raioner give the link.. even i will give a try

    • 2 years ago
  9. Raioner
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    http://openstudy.com/users/raioner#/users/raioner/updates/4e33937a0b8ba7b2da41d61e

    • 2 years ago
  10. Akshay_Budhkar
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    try answering it joe.. lol!!!

    • 2 years ago
  11. joemath314159
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    i feel like its a trap >.> lol

    • 2 years ago
  12. Akshay_Budhkar
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    still answer no..

    • 2 years ago
  13. joemath314159
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    isnt the first one 1 and the second one -1? or am i not giving this problem the attention it deserves?

    • 2 years ago
  14. myininaya
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    joe its not a trap

    • 2 years ago
  15. Akshay_Budhkar
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    i made it look like a trap.. lol!! ur right

    • 2 years ago
  16. Alchemista
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    I don't really understand how it is tricky? This is just order of operations and complex numbers.

    • 2 years ago
  17. joemath314159
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    Alchemista, nothing is tricky to you!

    • 2 years ago
  18. myininaya
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    lol its not tricky it wasn't meant for us people who have already passed algebra

    • 2 years ago
  19. Akshay_Budhkar
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    well ppl can answer the second one as 1 too as Raioner did in the first reply... @Alchemista

    • 2 years ago
  20. myininaya
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    yea raioner did a good job :) go raioner!

    • 2 years ago
  21. joemath314159
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    i dont know what im doing up <.< i have class tomorrow morning >.>

    • 2 years ago
  22. myininaya
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    i said gn and im still here

    • 2 years ago
  23. Alchemista
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    I haven't seen any linear algebra on here for a while

    • 2 years ago
  24. Akshay_Budhkar
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    oh...

    • 2 years ago
  25. joemath314159
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    ive noticed too Alchemista, and it saddens me =/

    • 2 years ago
  26. Akshay_Budhkar
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    you mean to say questions on linear algebra?? @Alchemista

    • 2 years ago
  27. Alchemista
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    yes

    • 2 years ago
  28. joemath314159
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    maybe during the fall semester it will pick up? maybe the actual Linear Algebra 18.06 thread will be alive?

    • 2 years ago
  29. joemath314159
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    i can only dream~

    • 2 years ago
  30. Alchemista
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    and there certainly isn't any abstract algebra stuff

    • 2 years ago
  31. myininaya
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    ok here is an easy linear algebra problem: show that a n by n matrix with zeros everywhere except on the diagonal of the matrix has the diagonal entries as eigenvalues

    • 2 years ago
  32. Akshay_Budhkar
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    if u want i can ask you guys some questions by tomorrow..But i believe the others must ask... We can ask them to ask such questions...

    • 2 years ago
  33. myininaya
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    i know its easy but u wanted a linear algebra problem lol

    • 2 years ago
  34. myininaya
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    whats that matrix called a diagonalized matrix?

    • 2 years ago
  35. myininaya
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    i cant remember the name

    • 2 years ago
  36. Alchemista
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    It is a diagonal matrix

    • 2 years ago
  37. myininaya
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    ok lol

    • 2 years ago
  38. joemath314159
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    i still havent answered that one problem i asked a while back. I was able to prove that if A is an invertible matrix with integer entries, and its inverse also has invertible entries, then the det A must be 1 or -1 (as per Alchemista's suggestion, thank you again). But i dont see how to use that fact to solve the problem.

    • 2 years ago
  39. joemath314159
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    Had to prove it before I could use it anywhos.

    • 2 years ago
  40. myininaya
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    ok i must really go to bed gn

    • 2 years ago
  41. joemath314159
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    lates :)

    • 2 years ago
  42. Akshay_Budhkar
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    gn.. meet you tomorro

    • 2 years ago
  43. Akshay_Budhkar
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    joe u also leaving?

    • 2 years ago
  44. joemath314159
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    i really need to =/ i have less than 8 hours till class, gotta get some sleep >.<

    • 2 years ago
  45. Akshay_Budhkar
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    oh ok...

    • 2 years ago
  46. Akshay_Budhkar
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    bye...

    • 2 years ago
  47. joemath314159
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    is this your normal time frame? during the week i should be on around now for a while. Mondays are the only days where my sleep schedule is off lol.

    • 2 years ago
  48. Akshay_Budhkar
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    how did myininaya factorize ths 25x^2-2576x+9904???

    • 2 years ago
  49. joemath314159
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    jesus O.o the polynomial is ridiculous

    • 2 years ago
  50. Raioner
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    \[25x^{2}-2576x+9904\]

    • 2 years ago
  51. joemath314159
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    if it was me, i would have just went to wolframalpha.com to see what the roots are.

    • 2 years ago
  52. Akshay_Budhkar
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    Raioner wants it ..... i would have done the same.. lol!

    • 2 years ago
  53. joemath314159
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    wait....9904...is that something squared? maybe.....

    • 2 years ago
  54. Alchemista
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    \[(x-4)(25x-2476)\]

    • 2 years ago
  55. joemath314159
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    nope its not.

    • 2 years ago
  56. Raioner
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    how did you do that alchemista?

    • 2 years ago
  57. Akshay_Budhkar
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    yup thats what she got... how did u do that Alchemista?

    • 2 years ago
  58. Alchemista
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    There are many ways you can find the roots (factoring is one of them). You can complete the square or use the quadratic formula.

    • 2 years ago
  59. joemath314159
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    mathemagic...lolol i saw someone post this word yesterday.

    • 2 years ago
  60. Raioner
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    o pellet yea ax^2+bx+c

    • 2 years ago
  61. Akshay_Budhkar
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    yup she asked y mathematics was called mathemagic.

    • 2 years ago
  62. Raioner
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    didn't even think of that. brilliant. Thanks man.

    • 2 years ago
  63. Alchemista
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    There actually is something called "mathemagics" well its someone who performs quick mental computations using mnemonic devices.

    • 2 years ago
  64. Raioner
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    Thanks guys. time for bed.

    • 2 years ago
  65. Akshay_Budhkar
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    mnemonic devices. whats that?

    • 2 years ago
  66. joemath314159
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    sounds interesting o.O i might have to google that sometime. Lates Raioner.

    • 2 years ago
  67. Alchemista
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    http://www.youtube.com/watch?v=M4vqr3_ROIk

    • 2 years ago
  68. Akshay_Budhkar
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    joe less dan 7 hours left for ur class.. lol!!!

    • 2 years ago
  69. joemath314159
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    lol >.< no idea why im up :)

    • 2 years ago
  70. joemath314159
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    that was amazing o.O

    • 2 years ago
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