Results 1 to 8 of 8

Thread: Square root of -1

  1. #1
    Moderator IanF's Avatar
    Join Date
    Dec 2007
    Location
    Jhb
    Posts
    2,615
    Thanks
    191
    Thanked 520 Times in 398 Posts

    Square root of -1

    I have been told this is I.
    Can someone help with the logic behind this.
    Only stress when you can change the outcome!

  2. #2
    Gold Member
    Join Date
    Jun 2010
    Location
    Johannesburg
    Posts
    832
    Thanks
    180
    Thanked 176 Times in 145 Posts
    A vague recollection was it being a "number" (or concept) on it own. So basically the square root of -1 = square root of -1.
    Its simply given the symbol "i".
    So "i" represents the square root of minus one.

  3. Thanks given for this post:

    IanF (19-May-15)

  4. #3
    Gold Member vieome's Avatar
    Join Date
    Apr 2012
    Location
    joburg
    Posts
    524
    Thanks
    57
    Thanked 159 Times in 118 Posts
    Blog Entries
    36
    Quote Originally Posted by IanF View Post
    I have been told this is I.
    Can someone help with the logic behind this.
    The sqaure root of -1 is actually 1(i) the (i) shows us that it is a complex number. such that (i)=-1

    Square roots of negative numbers are beyond the range of real numbers hence we use complex numbers which have (i) as part of its form.

    e.g sqaure root of 9 = 3 as 3*3 = 9
    square root of -9 = 3 as 3 * 3 * (i) where (i) = -1

  5. Thanks given for this post:

    IanF (19-May-15)

  6. #4
    Moderator IanF's Avatar
    Join Date
    Dec 2007
    Location
    Jhb
    Posts
    2,615
    Thanks
    191
    Thanked 520 Times in 398 Posts
    Thanks guys we made some coasters with the joke
    Click image for larger version. 

Name:	i_ate_some_pie_black_dinner_plates-r52e74ab1da414d78876e08c65f112c4f_ambb0_8byvr_512.jpg 
Views:	34 
Size:	19.8 KB 
ID:	5615
    I couldn't get the square root part
    Only stress when you can change the outcome!

  7. #5
    Moderator IanF's Avatar
    Join Date
    Dec 2007
    Location
    Jhb
    Posts
    2,615
    Thanks
    191
    Thanked 520 Times in 398 Posts
    Pic of the coaster
    Click image for larger version. 

Name:	pi coaster.jpg 
Views:	41 
Size:	64.3 KB 
ID:	5616
    Only stress when you can change the outcome!

  8. #6
    Gold Member
    Join Date
    Jun 2010
    Location
    Johannesburg
    Posts
    832
    Thanks
    180
    Thanked 176 Times in 145 Posts
    Lol. Who's the customer? The local Maths conference?

  9. #7
    Moderator IanF's Avatar
    Join Date
    Dec 2007
    Location
    Jhb
    Posts
    2,615
    Thanks
    191
    Thanked 520 Times in 398 Posts
    The I = Imaginery number that is what I have been told .
    The coasters are for a maths teacher I hope she understands.
    Only stress when you can change the outcome!

  10. #8
    Diamond Member wynn's Avatar
    Join Date
    Oct 2006
    Location
    east london
    Posts
    3,338
    Thanks
    548
    Thanked 624 Times in 523 Posts
    You got beaten to the punchline!!
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	pie.jpg 
Views:	31 
Size:	29.0 KB 
ID:	5619  
    "Nobody who has succeeded has not failed along the way"
    Arianna Huffington

    Read the first 10% of my books "Didymus" and "The BEAST of BIKO BRIDGE" for free
    You can also read and download 100% free my short stories "A Real Surprise" and "Pieces of Eight" at
    http://www.smashwords.com/books/view/332256

Similar Threads

  1. looking for finely chopped cotton strands or ~ 1cm square pieces
    By user2000 in forum General Business Forum
    Replies: 0
    Last Post: 18-Dec-14, 02:06 PM
  2. Square Kilometre Array (SKA) Africa and its people....
    By adrianh in forum General Chat Forum
    Replies: 1
    Last Post: 23-Feb-14, 04:37 PM
  3. Cold Calling or Root Canal Surgery
    By solweb in forum Marketing Forum
    Replies: 23
    Last Post: 25-Oct-12, 11:07 AM

Did you like this article? Share it with your favourite social network.

Did you like this article? Share it with your favourite social network.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •