** Problem 3.7** Source:
Adapted of Problem 6.26 - page 244
- IRWIN, J. David -
Book: Análise de Circuitos em Engenharia - 4ª edição - Ed. Pearson - 2013.

Determine the value of _{total} = 4.5 µF

__Solution of the do Problem 3.7__

Initially, let's look closely at the circuit highlighted in _{eq1}

Let's turn our attention to the circuit highlighted in _{eq2}

Looking at the circuit it is easy to see that the circuits highlighted in

Replacing _{eq1}_{eq2}

After some algebraic manipulations we arrive at a equation of the second degree, or:

Solving this equation we find two numerical values: one of the values is