Imaginary Numbers — SAT Math | i² = -1 and the Power Cycle
3:32
YouTubeMaths Academy EN
Imaginary Numbers — SAT Math | i² = -1 and the Power Cycle
i = √(-1), i² = -1. Powers cycle every 4. Complex number operations covered. 📌 What you'll learn: • i, i² = -1, i³ = -i, i⁴ = 1 (cycle repeats) • Simplify √(-16) = 4i • Multiply complex numbers: (a+bi)(c+di) • Find i^47 using the remainder trick ⏱ 3:31 of focused, animated math instruction 🎯 Part of the NovaMaths SAT ...
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