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  Modulus:    It is defined as                        Argument: Arg(Z):  It is defined as                        it is also known as amplitude of Z    symbolically amp(Z) Note:  If |Z|=0 then x=0 and y=0 The Argument θ of a complex number is …

The polar coordinates of a P are (r,θ) where r is known as modulus and  θ is the argument of a complex number Z. From above figure   a   =   r cosθ  b   =   r sinθ or  The plane is known as Argand plane or Argand Diagram or complex plane or Gaussian plane.

Let      Z1=( x1, y1 ) =             Addition:  The sum of two complex numbers is                                                                                   Subtraction:  The …

Need Of Complex Numbers Some quadratic equations which have no solutions in real numbers.  For Example 1.     2.    3.    In order to find the solutions of above given or similar quadratic equations, the symbol ” i  ”  was used.  Euler was the first person to introduce the symbol ” i “. where                 …

Distributive laws  Left Distributive Law  Right Distributive Law

Properties of complex Numbers If     be the three complex numbers then                                             Associative law of multiplication      Multiplicative identity.. Commutative law of multiplication For each non-zero 

Definition( Complex Number) A complex number is an element (x, y) of the set  = {  } obeying the following rules of addition and multiplication If   then 1.      2.      as   Z= 3+4i

Calculus MCQs 02 consist of 21 most important questions.Attempt these questions and prepare yourself for better results. Help: math definitions  Complex analysis mcqs Real Analysis mcqs Vector Analysis mcqs General knowledge mcqs CALCULUS MCQS TESTS

Analytic Geometry MCQs 01 consist of 17 most important multiple choice questions. Prepare these questions for better results and also you can prepare definitions of analytic-geometry.

Mechanics MCQs 01 consists of 31 most important multiple choice questions. Attempt these multiples and prepare yourself.