(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

its about setting a system of equations. . .about "nodes" and how in = out

I have the following circuit

[PLAIN]http://img820.imageshack.us/img820/8508/circuit.png [Broken]

2. Relevant equations

I= v/r

3. The attempt at a solution

I get for the first equation in node 1 (the middle circle in the leftmost column)

I also know that I = V/R so plugging in values I get:

4 + 2 = I_2

then for the second node (the rightmost) I would have

I_2 = I_3 + I_1 = 4 + 2

so does that mean that I_2 is just 6? (the addition of I_1 and I_3)

. . .if so then was this problem just a trick problem or something? cause I dont need any system or anything do I??

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# Homework Help: Linear algebra and circuits

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