Integral Powers of i (Cycle i → −1 → −i → 1 every 4 steps)
jee-advancedjee-main
Cycle i → −1 → −i → 1 every 4 steps
What each symbol means
| Symbol | What it stands for |
|---|---|
| k, r | Integers with r ∈ {0,1,2,3} via division algorithm |
When to use this
For integer exponents only in this cycle form. Reduces i^n mod 4.