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Akshay_Budhkar

  • 4 years ago

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....

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  1. Raioner
    • 4 years ago
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    1. 1

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

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

  4. myininaya
    • 4 years ago
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    oops i can delete

  5. myininaya
    • 4 years ago
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    lol

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

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

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

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

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

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

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

  13. joemath314159
    • 4 years ago
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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?

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

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

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

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

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

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

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

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

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

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

  24. Akshay_Budhkar
    • 4 years ago
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    oh...

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

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

  27. Alchemista
    • 4 years ago
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    yes

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

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

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

  31. myininaya
    • 4 years ago
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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

  32. Akshay_Budhkar
    • 4 years ago
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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...

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

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

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

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

  37. myininaya
    • 4 years ago
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    ok lol

  38. joemath314159
    • 4 years ago
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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.

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

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

  41. joemath314159
    • 4 years ago
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    lates :)

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

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

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

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

  46. Akshay_Budhkar
    • 4 years ago
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    bye...

  47. joemath314159
    • 4 years ago
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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.

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

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

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

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

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

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

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

  55. joemath314159
    • 4 years ago
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    nope its not.

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

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

  58. Alchemista
    • 4 years ago
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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.

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

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

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

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

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

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

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

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

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

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

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

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

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