This could be another issue of not being able to look at the circuit in an easier way, but I am a little confused at the answer here. Maybe there is a step in my work that I did not take, or maybe I took too many steps.
The problem says to find the value of Vo, and it is a node voltage practice exercise. When running the circuit through LTSpice, I got the same answer as the book, Vo = 2.79V, but I just do not see what I did wrong. Here is the circuit, and my work:
Node 1 Equations:
-8mA + V1/3k + (V1-V2)/6k + 2mA = 0
V1(1/2k) - V2(1/6k) = 6mA
Node 2 Equations:
-(V1-V2)/6k + V2/6k + (V2-V3)/2k = 0
-V1(1/6k) + V2(5/6k) - V3(1/2k) = 0
Node 3 Equations:
-(V2-V3)/2k - 2mA + V3/1k = 0
-V2(1/2k) + V3(3/2k) = 2mA
All equations to form system of linear equations:
V1(1/2k) - V2(1/6k) + 0 = 6mA
-V1(1/6k) + V2(5/6k) - V3(1/2k) = 0
0 -V2(1/2k) + V3(3/2k) = 2mA
Solving the system with my calculator yields the results of:
V1 = 10.7692V
V2 = 3.6923V
V3 = 2.5641V
I assumed that V3 should equal Vo, but my numbers are off. Where did I go wrong? Am I over thinking something?