Simple Nodal Analysis (3 eq, 3 unknowns)

Discussion in 'Homework Help' started by jegues, Sep 19, 2010.

  1. jegues

    Thread Starter Well-Known Member

    Sep 13, 2010
    735
    43
    See figure for question, and other figure for my work.

    I'm pretty confident my KCL equations are correct, but the numbers are so shitty so shitty algebra follows.

    Anyone know any efficient way to solve 3 equations with 3 unknowns like this?

    I've found it sucks regardless, and I still can't get the right answer.
     
  2. debjit625

    Well-Known Member

    Apr 17, 2010
    790
    186
    Solving simultaneous equations of more than two or three unknown variables are best done with softwares like Matlab,Octave or if you want to solve it by hands the you could use matrix method but as the unknown variables increase it becomes more messy and hard to manage.

    Good Luck
     
  3. Jony130

    AAC Fanatic!

    Feb 17, 2009
    3,957
    1,097
    Well for this circuit try to use Thevenin or Norton theory.
     
  4. jegues

    Thread Starter Well-Known Member

    Sep 13, 2010
    735
    43
    Yup, I solved my equations wrong. I got it using Cramers rule.

    Thanks again!
     
Loading...