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Hi,

I am sure I have mistaken my DE setup or my initial conditions assumption.

[URL]http://ivila.net/E8.png[/URL]

R1 will be the middle Resistor

R2 the top one.

i1' + R1/L i1 = R1/L i2

i2(R1+R2)*1/(R1) + 1/(R1*C)*integral(i2)=i1

My initial conditions are i1(0) = 1A

Vl = L di1/dt

at (0+) VL = 0 therefore L di1/dt = 0 therefore di1/dt = 0

i1'(0) = 0

Substitute for i1 I end up with sqrt(2)exp(-2)cos(t+45')

I am sure I have mistaken my DE setup or my initial conditions assumption.

## Homework Statement

[URL]http://ivila.net/E8.png[/URL]

R1 will be the middle Resistor

R2 the top one.

## Homework Equations

i1' + R1/L i1 = R1/L i2

i2(R1+R2)*1/(R1) + 1/(R1*C)*integral(i2)=i1

## The Attempt at a Solution

My initial conditions are i1(0) = 1A

Vl = L di1/dt

at (0+) VL = 0 therefore L di1/dt = 0 therefore di1/dt = 0

i1'(0) = 0

Substitute for i1 I end up with sqrt(2)exp(-2)cos(t+45')

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