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CBSE NOTES ⇒ Class 11th ⇒ Mathematics ⇒ 5. Complex Number and Quadratic Equations

## 5. Complex Number and Quadratic Equations

### The Modulus and Congugate of a Complex Number

Let z = a + ib be a complex number.

Then, the modulus of z, denoted by |z|, is defined to be the non-negative real number ​, i.e Conjugate: The conjugate is where you chaange the sign in the middle of two terms like

and the congugate of z, denoted as; The conjugate is where you change the sign in the middle of two terms like this:

d,;d;a;'

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## Study Materials List:

##### CBSE NOTES ⇒ Class 11th ⇒ Mathematics
1. Sets
2. Relations and Functions
3. Trigonometric Functions
4. Principle of Mathematical Induction
5. Complex Number and Quadratic Equations
6. Linear Inequalities
7. Permutations and Combinations
8. Binomial Theorem
9. Sequences and Series
10. Straight Lines
11. Conic Sections
12. Introduction to Three Dimensional Geometry
13. Limits and Derivatives
14. Mathematical Reasoning
15. Statistics
16. Probability

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