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Calculation of currents and power balance in direct current circuits using the Nodal analysis method. This is a class for engineering students, or professional technical education where we quickly teach how to apply the Nodal analysis method to calculate the currents of an electrical circuit. We have calculators available: Kk 82 at 199.00Mt, 249.00Mt, Casio fx-991-MS at 499.00Mt and Casio fx-991-Plus at 999.00Mt. The Casio ones solve systems of equations, and perform operations with complex numbers in this way, making calculations easier. If you want to purchase the calculators, you can contact us: 846890076 or 879482754