The book has been prepared in a self-learning style, strictly
following a student-friendly approach. Every effort has been made to
present sufficient theoretical explanations in simple english language
supported with essential short and long illustrations with solution,
so as to cover all the important aspects of the subject. The topics are
arranged systematically, in exact accordance with the revised syllabus.This work would not have been possible without the constant
support, encouragement, and inspiration of our family members, to
whom we owe a deep sense of gratitude. We also express our heartfelt
thanks to our esteemed colleagues, whose constructive suggestions
and critical feedback have immensely contributed to the quality of this
book.