Something for the brain!

[vbzero]

Watch this:

Example

i1*r1+i3*r3-u1=0
i2*r2+i3+r3+u2=0

The unknown varibles are i1, i2, i3.

Does anyone know how to make a procedure which
calculates the unknown varibles.

If it's possible the program should give an output
of its calculation progress. - Step to step.

Any suggestions?

thx, vbzero

[Gen-X]

i1*r1+i3*r3-u1=0
i2*r2+i3+r3+u2=0

The unknown varibles are i1, i2, i3.

So you know both u1 and u2?
What about r1, r2 and r3?

You have 2 equations and 8 variables...


If u1, u2, r1, r2 and r3 are known then why not state them as constant values and re-arrange the algorithms.

[vbzero]

All variables are known except i1, i2, i3.

The other variables are known but depend on the
user's input. (Maybe there are some TextBoxes to
set the values)

thx, vbzero

[sanon]

You need 3 equations to solve 3 unknown variables.

[vbzero]

i3 is proberly also known:

i3=i1+i2

- so you can say i1+i2 instead i3

thx, vbzero

[HarryW]

In that case

          i3 - i1 - i2 = 0
i1 * r1 + i3 * r3 - u1 = 0
i2 * r2 + i3 + r3 + u2 = 0

You have 3 equations.