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I'm trying to get the equations for this exercise but they're giving me some troubles...I think this could also be done with node voltage,but I've tried with the mesh method.Those are my equations:

Eq.1: -13 + 4xI1 + 6xI1 + 2.5xI2 + 7.5xI2=0

Eq. 2: 2.5xI2 + 7.5xI2 + 2xI3 + 8xI3 + 0.8vo=0

Va=-2xI3

Vo= -13 + 4xI1 + 6xI1

I1- I2=-0.4va

I2-I3=-5

http://i75.photobucket.com/albums/i281/esmeco/Meshmethod.jpg [Broken]

I'm not sure if those equations are right(which probably aren't because the solution doesn't match) and I'm a bit in doubt with the polarities...Any help is really appreciated!Thanks in advance...

Eq.1: -13 + 4xI1 + 6xI1 + 2.5xI2 + 7.5xI2=0

Eq. 2: 2.5xI2 + 7.5xI2 + 2xI3 + 8xI3 + 0.8vo=0

Va=-2xI3

Vo= -13 + 4xI1 + 6xI1

I1- I2=-0.4va

I2-I3=-5

http://i75.photobucket.com/albums/i281/esmeco/Meshmethod.jpg [Broken]

I'm not sure if those equations are right(which probably aren't because the solution doesn't match) and I'm a bit in doubt with the polarities...Any help is really appreciated!Thanks in advance...

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