Element of Mathematics Solutions of Class 11th
In this blog post you can see about the solutions of element Mathematics of class 11th . In this post you can see only chapter 5 i .e. Complex Number and Quadratic Equations solutions PDF . Others chapter solution are also come in soon . For all Notification subscribe us by Email . You can see the subscribe option below .
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Chapter - 5
Important Theory
Complex Numbers
Definitions. A number of the form a + ib, where a and b are any real numbers and i = √-1, is called a complex number and is generally denoted by z . Thus z =a + ib.
'a' is called its real part and is denoted as Re (a + ib ) or Re(z) and 'b' os called imaginary part and is denoted as Im (a + ib ) or Im (z).
Purely real and Purely Imaginary Numbers
In case = 0 , the number a + ib reducesto 0 + ib or 'ib' and is called a purely or wholly imaginary number . In case b = 0 , the number becomes a + i0 i .e. , 'a' which os a real number anf is called a purely real number. A complex number a + ib is zero if both a and b are zero.This a complex number z is said to be
(a) purely real if Im (z) =0
and (b) purely imaginary if Re (z) = 0.
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