Chapter 4 • Class 11 Mathematics
Complex Numbers and Quadratic Equations
Class 11 Maths Complex Numbers — iota, algebra of complex numbers, modulus, conjugate, Argand plane and quadratic equations with complex roots.
Study by topic — one focused page each
1
Complex Numbers and Their Algebra
Some equations have no real solution. The simplest is , because the square of any real number is never negative. To repair this gap we introduce a sin…
Start this topic → 2Modulus, Conjugate and the Argand Plane
Every complex number can be pictured as the point in a plane: the horizontal axis carries the real part and the vertical axis carries the imaginary pa…
Start this topic → 3Quadratic Equations with Complex Roots
A quadratic equation has the form with . Its roots are given by the quadratic formula, and the quantity under the square root — the discriminant — dec…
Start this topic →Chapter-wide tests
Online Test
10 MCQ • 20 min
IMO / Olympiad Practice
Olympiad level • 20 min
📝 Full Chapter Test (Download & Print)
35 marks • 75 min • with answer key