Results 1 to 3 of 3

Math Help - Anyone willing to check my work please =)

  1. #1
    Newbie
    Joined
    Jul 2010
    Posts
    13

    Anyone willing to check my work please =)

    I uploaded the problem to tinypic so its easier to see http://i30.tinypic.com/fkr911.png

    Here's what I got:
    A) -3 sqrt2
    B) -1 (is there a good way to "show my work" for how i got -1 without filling the entire page?)

    C) 5+12i
    D) 39+2i
    E) -3+29i/25


    Not very good at trig, please let me know if i messed any of these up, thank you!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor Also sprach Zarathustra's Avatar
    Joined
    Dec 2009
    From
    Russia
    Posts
    1,506
    Thanks
    1
    All correct.

    {B. 206=2*103. i^206=i^2*103=(-1)^103=(-1)^1 * (-1)^102=-1*1=-1
    Last edited by mr fantastic; July 17th 2010 at 02:20 PM.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,406
    Thanks
    1488
    Awards
    1
    The answers are correct.

    i^{206}=i^{(4)(51)+2}=(i^4)^{51}(i^2)=-1
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 4
    Last Post: March 12th 2011, 04:05 AM
  2. Work--please check my work for me
    Posted in the Calculus Forum
    Replies: 3
    Last Post: February 1st 2011, 09:02 AM
  3. Replies: 1
    Last Post: July 21st 2010, 06:02 PM
  4. Can someone please just check my work here?
    Posted in the Calculus Forum
    Replies: 1
    Last Post: January 27th 2010, 01:06 PM
  5. Please check my work
    Posted in the Pre-Calculus Forum
    Replies: 5
    Last Post: April 2nd 2009, 08:10 PM

Search Tags


/mathhelpforum @mathhelpforum