i had make 2 equation out for nodal analysis
eq 1 : (V1-V3)/12 + V1/5 = (V3-V2)/8 + 6
eq 2 : V1 - V2 = 12

but i had no idea for equation 3, any1 help pls.

for mesh analysis, i need to comfirm the supermesh equation
by apply supermesh, 6A is open circuit.
i obtained the below equation:
-12 + 5I2 + 8(I1+I3) = 5Vx

below 2 loop are I1 and I2 with anticlockwise, I3 is upper loop with cloc

I have a very long document containing lots of svg images created using the extension TexMaths. This extension uses the latex installation to create svg image of the inputted equation (or set of equations). The code for each equation (or set of equations) is embedded in the image as part of its Description.

Hello,

I am able to solve Systems of Linear Equation in Three Variables. But when I tried to search Linear Equation in Three Variables in Google, it always end up being Systems of Linear Equation.

For example, we have .

I am using mathtype to insert equations in my word 2007 document. I have chapters and sections in the document made with multi-level lists. Now i need my equations that i insert using mathtype to be numbered as (chapter no. equation no.) However selecting the required option in mathtype always shows my equation as (0.1) etc in all chapters i.e. chapter number is always shown to be 0.

Hello!

Could I ask you a big favor?
I need help .
I have :
2x + [24-2 (y)] = 20
I tried to use Equation Solver here:
http://www.numberempire.com/equation...var=y&answers=

And I've got: y = x+2
It's the right answer, textbook shows me the same.
But I want to understand the way to solve it.
Please give me step by step explanation.

Thanks in advance!

I just don't understand the third equation in page:
http://www.allaboutcircuits.com/vol_1/chpt_10/3.html

First of all I3 is counter clockwise (as shown in pic) so why the equation shows as if it is clockwise???

Next I have no idea why in equation there is 150(I3+I1) & 300(I3-I2) since I3&I1 go through completely different direction.
The same thing for I2&I3 although theyre in the s

its a questionn asking for donor concentration in an Si sample.

it used the equation pho(resistiviy) = 1/sigma(conducitivity) = ( n(concentration) * e ( charge) * u ( mobility) )^-1

where does this equation derive from? i cannot find it anywhere...

Does anyone know of a free software that has a linear equation solver?

I use mathcad at work and it has a great linear equation solver that can solve a linear equation with variables... Unfortunately, I don't have the means to purchase mathcad for my home use. My ti89 will do it also but it's a bit cumbersome and I keep it at work too.

Any ideas?

Im able to write up my equations using mesh analysis for Isc(Current short circuit) and my equations for Voc(voltage open circuit), but cant quite figure out the voltage across A,B for Voc. Would it be the voltage across the 4ohm resistor on top(I3) or the 6ohm resistor in (I1)?

Problems posted below as Thev. Voc & Thev.