Results 1 to 5 of 5

Math Help - complex numbers- vector- albebra

  1. #1
    Newbie
    Joined
    Jun 2008
    Posts
    15

    Talking Help

    hello every,
    how do you solve this sets of linear and non-linear equations using ti 89:
    8x-2ix+4iy=0
    6y+4iy+x=8.66+5i

    and
    8x-2ix+i4y=0
    6y+4iyx=8.66+5i

    thank you all.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Moo
    Moo is offline
    A Cute Angle Moo's Avatar
    Joined
    Mar 2008
    From
    P(I'm here)=1/3, P(I'm there)=t+1/3
    Posts
    5,618
    Thanks
    6
    Hello,

    Quote Originally Posted by McCoy View Post
    hello every,
    how do you solve this sets of linear and non-linear equations using ti 89:
    8x-2ix+4iy=0
    6y+4iy+x=8.66+5i

    and
    8x-2ix+i4y=0
    6y+4iyx=8.66+5i

    thank you all.
    For i, use the special button (2nd + catalog, depending on the version).

    Type

    Code:
    solve(8x-2ix+4iy=0 and 6y+4iy+x=8.66+5i,{x,y})
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Jun 2008
    Posts
    15
    yea that's what i did before but it didn't give me an answer.it just keeps itself busy for ages but give no solutions in the end. For the last simultatenous eqn, my ti 89 titanium doesn't even attempt to sove it: it just says ''false''...that's the answer it gives. too bad.i can solve them using the traditional method of pen and paper, but it takes long time to find the solutions, esp for the last(ie the one containing a non-linear equation.) but time is money.i bought ti 89 to calculate such equations, but it just turned out to be of no help.well casio all the way!.
    Thanks you very much for offering help.it's appreciated.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Moo
    Moo is offline
    A Cute Angle Moo's Avatar
    Joined
    Mar 2008
    From
    P(I'm here)=1/3, P(I'm there)=t+1/3
    Posts
    5,618
    Thanks
    6
    Oi, this is because x and y are complex numbers too, I didn't notice...

    So you have to use Csolve, instead of solve.
    It's in F2 > A Complex > cSolve()

    And it gives solutions
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Jun 2008
    Posts
    15
    yes it works.I'm now a happy dude hehe.thank you very much for your help.I's a brilliant job
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: September 27th 2010, 04:14 PM
  2. Replies: 4
    Last Post: September 19th 2010, 04:02 PM
  3. complex numbers and vector spaces
    Posted in the Advanced Algebra Forum
    Replies: 3
    Last Post: July 7th 2010, 01:58 PM
  4. Vector space over the field of complex numbers
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: January 19th 2008, 05:39 PM
  5. Replies: 1
    Last Post: May 24th 2007, 04:49 AM

Search Tags


/mathhelpforum @mathhelpforum