What are the most common mistakes students make in Complex Numbers?
the product rule for surds doesn't hold for negatives; i·i = i² = −1.
Top mistakes to avoid in Complex Numbers: • the product rule for surds doesn't hold for negatives; i·i = i² = −1. • writing √(−1)·√(−1) = √1 = 1. • forgetting that z times its conjugate equals |z|² (a real number). • plotting the imaginary part on the x-axis.
Common mistake
the product rule for surds doesn't hold for negatives; i·i = i² = −1.
Tap to watch or see it right here — the app stays open (it only opens a quick search if nothing embeddable is found).