• Home
  • Textbooks
  • NCERT Class 11 - Math
  • Complex Numbers and Quadratic Equations

NCERT Class 11 - Math

Parvin Sinclair, G.P. Dikshit

Chapter 5

Complex Numbers and Quadratic Equations - all with Video Answers

Educators


Section 1

Introduction

01:23

Problem 1

Express each of the complex number given in the form $a+i b$.
$$
(5 i)\left(-\frac{3}{5} i\right)
$$

AG
Ankit Gupta
Numerade Educator
01:39

Problem 2

Express each of the complex number given in the form $a+i b$.
$$
i^{9}+i^{19}
$$

AG
Ankit Gupta
Numerade Educator
01:33

Problem 3

Express each of the complex number given in the form $a+i b$.
$$
i^{-39}
$$

AG
Ankit Gupta
Numerade Educator
01:28

Problem 4

Express each of the complex number given in the form $a+i b$.
$$
3(7+i 7)+i(7+i 7)
$$

AG
Ankit Gupta
Numerade Educator
00:41

Problem 5

Express each of the complex number given in the form $a+i b$.
$$
(1-i)-(-1+i 6)
$$

AG
Ankit Gupta
Numerade Educator
01:23

Problem 6

Express each of the complex number given in the form $a+i b$.
$$
\left(\frac{1}{5}+i \frac{2}{5}\right)-\left(4+i \frac{5}{2}\right)
$$

AG
Ankit Gupta
Numerade Educator
01:33

Problem 7

Express each of the complex number given in the form $a+i b$.
$$
\left[\left(\frac{1}{3}+i \frac{7}{3}\right)+\left(4+i \frac{1}{3}\right)\right]-\left(-\frac{4}{3}+i\right)
$$

AG
Ankit Gupta
Numerade Educator
01:33

Problem 8

Express each of the complex number given in the form $a+i b$.
$$
(1-i)^{4}
$$

AG
Ankit Gupta
Numerade Educator
01:09

Problem 9

Express each of the complex number given in the form $a+i b$.
$$
\left(\frac{1}{3}+3 i\right)^{3}
$$

AG
Ankit Gupta
Numerade Educator
01:09

Problem 10

Express each of the complex number given in the form $a+i b$.
$$
\left(-2-\frac{1}{3} i\right)^{3}
$$

AG
Ankit Gupta
Numerade Educator
00:26

Problem 11

Find the multiplicative inverse of each of the complex numbers given.
$$
4-3 i
$$

Martha Richards
Martha Richards
Numerade Educator
03:09

Problem 12

Find the multiplicative inverse of each of the complex numbers given.
$$
\sqrt{5}+3 i
$$

Babita Kumari
Babita Kumari
Numerade Educator
00:46

Problem 13

Find the multiplicative inverse of each of the complex numbers given.
$$
-i
$$

AG
Ankit Gupta
Numerade Educator
01:32

Problem 14

Express the following expression in the form of $a+i b$ :
$$
\frac{(3+i \sqrt{5})(3-i \sqrt{5})}{(\sqrt{3}+\sqrt{2} i)-(\sqrt{3}-i \sqrt{2})}
$$

Julie Silva
Julie Silva
Numerade Educator