RE: LeoThread 2025-02-21 21:57
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Cubic Formula Proof Step 4: Other Solutions of y using the Cube Root of Unity
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Cubic Formula Proof Step 4: Other Solutions of y using the Cube Root of Unity
In this video I go over the fourth step of the Cubic Formula proof which involves obtaining the complex solutions of y by considering the cube root of unity. Since the cube root of the z values from Vieta's substitution has 3 factors, we need to multiply the principle solution by the factors to obtain each separate solution.