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## Homework Statement

My teacher gave me a method to find Impedance of Thevenin and Norton. Here is her method: she removed Indepentdence source (voltage is closed, current is open) and did not put V external ( so the dependent source did not working because of no source). And she find resistance

## Homework Equations

Is that method is true?

## The Attempt at a Solution

I search google but nobody give that method