Metin Bektas

“two of the most important function classes: exponential and trigonometric functions.”
― Metin Bektas, Math Shorts - Exponential and Trigonometric Functions

“5.2. Copyright and Disclaimer Copyright 2014 Metin Bektas. All Rights Reserved. This book is designed to provide information about the topics covered. It is sold with the understanding that the author is not engaged in rendering legal, accounting or other professional services. The author shall have neither liability nor responsibility to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indirectly by the information covered in this book. The book is for personal use of the original buyer only. It is exclusive property of the author and protected by copyright and other intellectual property laws. You may not modify, transmit, publish, participate in the transfer or sale of, reproduce, create derivative works from and distribute any of the content of this book, in whole or in part. The author grants permission to the buyer to use examples and reasonably sized excerpts taken from this book for educational purposes in schools, tutoring lessons and further training courses under the condition, that the material used is not sold or given away and is properly cited.”
― Metin Bektas, Algebra - The Very Basics