Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

awn786

What is the square root of minus 1. When i do it in a scientific calculator, it says 'i' (imaginary unit) and i have no idea what that means

  • one year ago
  • one year ago

  • This Question is Closed
  1. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    \[\sqrt{-1} = x \] what is the value of x

    • one year ago
  2. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    please dont put links

    • one year ago
  3. zaynahf
    Best Response
    You've already chosen the best response.
    Medals 0

    Imaginary numbers result when you are taking the square root of any negative number: For an example, \[\sqrt{-1}\] = i \[\sqrt{-25} = 5i\] The 'i' is kind of like the negative sign

    • one year ago
  4. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    so what is an imaginary unit

    • one year ago
  5. zaynahf
    Best Response
    You've already chosen the best response.
    Medals 0

    I know of a video you can watch if you want to

    • one year ago
  6. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    yes what is the vid @zaynahf

    • one year ago
  7. hba
    Best Response
    You've already chosen the best response.
    Medals 0

    did you see the link @awn786 It has everything.

    • one year ago
  8. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    yes i did but what is an imaganary unit

    • one year ago
  9. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    WOW OMG complicated @hba

    • one year ago
  10. zaynahf
    Best Response
    You've already chosen the best response.
    Medals 0

    The first link is really straight forward, try that

    • one year ago
  11. hba
    Best Response
    You've already chosen the best response.
    Medals 0

    @awn786 Well,I tried to simplify and put everything :)

    • one year ago
  12. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    thanks for trying. @hba

    • one year ago
  13. hba
    Best Response
    You've already chosen the best response.
    Medals 0

    You are welcome :)

    • one year ago
  14. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    listen and can u give a simple i word answer: \[\sqrt{-1}=x\] what is the value of x in numbers.

    • one year ago
  15. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    1 word answer*

    • one year ago
  16. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    not i word

    • one year ago
  17. hba
    Best Response
    You've already chosen the best response.
    Medals 0

    I can help you understand what imaginary numbers are. So,the base of imaginary numbers is actually laid upon some of the things like \[\huge \ i=\sqrt{-1}\] The other thing is \[\huge\ \omega=\frac{ -1+i \sqrt{3} }{ 2 }\]

    • one year ago
  18. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    whats w

    • one year ago
  19. hba
    Best Response
    You've already chosen the best response.
    Medals 0

    We call this omega,It's derivations is given in my link :)

    • one year ago
  20. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    whats w @hba

    • one year ago
  21. hba
    Best Response
    You've already chosen the best response.
    Medals 0

    Now as per your question. x=root{-1} x=i Here i is actually iota and it is an imaginary number.

    • one year ago
  22. hba
    Best Response
    You've already chosen the best response.
    Medals 0

    That's omega @awn786

    • one year ago
  23. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    whats omega

    • one year ago
  24. hba
    Best Response
    You've already chosen the best response.
    Medals 0

    @awn786 Please check the link i have provided. It has everything Please give it a read.

    • one year ago
  25. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    i said in numbers. your answer is basicly my question

    • one year ago
  26. hba
    Best Response
    You've already chosen the best response.
    Medals 0

    Well,In numbers it is sqrt{-1}

    • one year ago
  27. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    it should be easy shouldent it.

    • one year ago
  28. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    i dont understand ur link

    • one year ago
  29. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    what is omega

    • one year ago
  30. hba
    Best Response
    You've already chosen the best response.
    Medals 0

    I have already told you what omega is.

    • one year ago
  31. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    no u havent @hba

    • one year ago
  32. hba
    Best Response
    You've already chosen the best response.
    Medals 0

    I said it is -1+i sqrt{3}/2

    • one year ago
  33. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    ok (i dont get it but ok) i' only in year 9 doing my gcse's

    • one year ago
  34. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    \[\sqrt{-1}\] doesn't exist as a the REAL number you are asking for, because there's no number that you can square (because of the SQUARE root) and gives you -1

    • one year ago
  35. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    you just need to know what a square root is

    • one year ago
  36. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    i know what a square root is ofc

    • one year ago
  37. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    that's why there's no sqrt of ANY negative numbers, because everthing squared is BIGGER than 0

    • one year ago
  38. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    (possitive)

    • one year ago
  39. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    oh i get it so its an imaganary number because it cant exist?

    • one year ago
  40. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    you have the best responce

    • one year ago
  41. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    EXACTLY, it CAN'T EXIST as a "normal number"

    • one year ago
  42. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    thank u so much.

    • one year ago
  43. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    ^^^^^^ @GCR92

    • one year ago
  44. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    so mathematicians around XVII century had to figure out another type of numbers, called COMPLEX numbers, and the first number of complex numbers is \[\sqrt{-1}\]

    • one year ago
  45. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    they INVENTED it

    • one year ago
  46. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    you are welcome

    • one year ago
  47. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    ur a genius @GCR92

    • one year ago
  48. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    not really, but thanks!

    • one year ago
  49. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    ill draw you something

    • one year ago
  50. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    you can bring the most complex thing and make others understand. are u sure ur not related to prfsr. brian cox

    • one year ago
  51. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1358026644045:dw|

    • one year ago
  52. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    hahaha you amuse me, nothing is hard when you have an amazing teacher, and I have it right now.

    • one year ago
  53. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    you understand what I drew?

    • one year ago
  54. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah u drew a number line. who is ur teacher

    • one year ago
  55. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    My uncle, who's been teaching maths since he was 15 and he's now 57, anyway, let's go back to our imagination

    • one year ago
  56. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1358026974868:dw|

    • one year ago
  57. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    ALMOST

    • one year ago
  58. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1358027044754:dw|

    • one year ago
  59. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1358027175723:dw|

    • one year ago
  60. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1358027034198:dw|

    • one year ago
  61. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    you put the axis pararell and it's perpendicular cutting in 0

    • one year ago
  62. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1358027255837:dw|

    • one year ago
  63. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    that's why i said almost, because you figured out ANOTHER line, and that would make a 300 year old mathematician proud

    • one year ago
  64. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    yepeee

    • one year ago
  65. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    because they CAN be negative in their new axis, the imaginary axis

    • one year ago
  66. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    the imaginary line

    • one year ago
  67. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    it is not allowed to be a negative square root in the REAL line, but it is in the imaginary one

    • one year ago
  68. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    so in imaginative can they ever be 3i or always do they have to be -3i

    • one year ago
  69. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    so we just call it i, like we call 1 one

    • one year ago
  70. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    there are imaginary postive numbers and imaginary negative numbers, under 0

    • one year ago
  71. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    real negatives are at the left of 0, so why can't there be negative imaginary ones?

    • one year ago
  72. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1358027454145:dw|

    • one year ago
  73. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    above 0 is positive?

    • one year ago
  74. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    if you delete the minus inside of the root, it would be a real number then!

    • one year ago
  75. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes that's what i was writting

    • one year ago
  76. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    and under 0 negative, i forgot to draw it

    • one year ago
  77. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    just like the real line but perpendicular

    • one year ago
  78. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    above 0 goes posstive until inifinity and under 0 negative until infinity

    • one year ago
  79. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    and on the real line is it same?

    • one year ago
  80. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1358027632303:dw|

    • one year ago
  81. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    they are two separated lines.

    • one year ago
  82. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    bye i need to go. if i see u tommorw here i will carry on the conversation.

    • one year ago
  83. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    okay, sure! bye! you are smart btw, you figured the other line very well.

    • one year ago
  84. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    figured out*

    • one year ago
  85. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    thanks

    • one year ago
  86. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    @GCR92 im back

    • one year ago
  87. Krishnadas
    Best Response
    You've already chosen the best response.
    Medals 0

    complex numbers

    • one year ago
  88. AravindG
    Best Response
    You've already chosen the best response.
    Medals 0

    i is actually an imaginary number used to give value to \[\sqrt{-1}\]

    • one year ago
  89. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    yes i get that.

    • one year ago
  90. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    Look above^

    • one year ago
  91. ParthKohli
    Best Response
    You've already chosen the best response.
    Medals 0

    Wait, no!

    • one year ago
  92. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    what?

    • one year ago
  93. ParthKohli
    Best Response
    You've already chosen the best response.
    Medals 0

    \(i\) is defined as the imaginary number such that \(i^2 = -1\), not \(i= \sqrt{-1}\).

    • one year ago
  94. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    no ur wrong

    • one year ago
  95. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    wait

    • one year ago
  96. ParthKohli
    Best Response
    You've already chosen the best response.
    Medals 0

    How so...?

    • one year ago
  97. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    watch

    • one year ago
  98. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    wait

    • one year ago
  99. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    http://imgur.com/kwevvqi

    • one year ago
  100. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    and also its just common knowlige

    • one year ago
  101. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    Knowledge*

    • one year ago
  102. ParthKohli
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes, \(i\) is one of the square roots of \(-1\). But \(i \ne \sqrt{-1}\).

    • one year ago
  103. ParthKohli
    Best Response
    You've already chosen the best response.
    Medals 0

    I mean, \(\sqrt{-1} =i,-i\)

    • one year ago
  104. ParthKohli
    Best Response
    You've already chosen the best response.
    Medals 0

    So you must define \(i^2 = -1\) if you don't want things to mess up

    • one year ago
  105. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    wow gcr92 was WAY better at explaining things

    • one year ago
  106. ParthKohli
    Best Response
    You've already chosen the best response.
    Medals 0

    What would you like to learn?

    • one year ago
  107. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    apparantly his teacher is hgis uncle who started teaching him maths when he was 15 an now is 50

    • one year ago
  108. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    wait

    • one year ago
  109. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    carry on from:

    • one year ago
  110. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1358591619083:dw|

    • one year ago
  111. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    look above^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

    • one year ago
  112. ParthKohli
    Best Response
    You've already chosen the best response.
    Medals 0

    Re and Co, yes.

    • one year ago
  113. nikhilchabe
    Best Response
    You've already chosen the best response.
    Medals 0

    Here you go with the link for complete solution! http://www.learnalberta.ca/content/memg/Division03/Square%20Root/index.html

    • one year ago
  114. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    ermmm it needs to be simple

    • one year ago
  115. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    nope its not

    • one year ago
  116. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    sorry

    • one year ago
  117. awn786
    Best Response
    You've already chosen the best response.
    Medals 1

    where is GCR92

    • one year ago
  118. GCR92
    Best Response
    You've already chosen the best response.
    Medals 2

    Here. What's up?

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.