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Class XI Mathematics

Chapter 4: Complex Numbers and Quadratic Equations

Standard NCERT & CBSE aligned study curriculum. Master concepts, track accuracy, revise weak areas, and challenge yourself with 9 customized practice modes.

Example 1

Modulus of Complex Number

Find the modulus of complex number z = 3 + 4i.
root αroot βy = ax² + bx + c

Calculation Steps:

  1. 1Identify real part x = 3, imaginary part y = 4.
  2. 2Apply modulus formula: |z| = √(x² + y²).
  3. 3Calculation: √(3² + 4²) = √(9 + 16) = √25 = 5.
Solution5