NCERT Solutions for Class 11 Maths Chapter 5

NCERT Solutions for Class 11 Maths Chapter 5 Complex Numbers and Quadratic Equations सम्मिश्र संख्याएँ और द्विघात समीकरण download in PDF form free to use it offline. All Solutions are updated for CBSE Exam 2019 based on new CBSE Curriculum 2018-19 for CBSE Board, MP Board, Gujrat UP Board, Uttarakhand Board and Bihar Board, who are following NCERT Books for their exams.

NCERT Solutions for Class 11 Maths Chapter 5

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Class 11 Maths Chapter 5 Complex Numbers Solutions

Important Terms on Complex Numbers

  • A number of the form z = a + ib, where a, b are real numbers, is called a complex number. a is called the real part of z, denoted by Re(z) and b is called the imaginary part of z, denoted by Im(z).
  • a + ib = c + id if a = c, and b = d
  • If z1 = a + ib, z2 = c + id. In general, we cannot compare and say that z1> z2 or z1< z2 but if b, d = 0 and a > c then z1> z2, i.e. we can compare two complex numbers only if they are purely real.
    • z = 0 + i 0 is additive identity of a complex number.
    • –z = –a –ib is called the Additive Inverse or negative of z = a + ib.
    • z = 1 + i 0 is multiplicative identity of complex number.
  • The coordinate plane that represents the complex numbers is called the complex plane or the Argand plane.

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