There is a wavy line written on the third photo. Thank you in advance if there are no issues. A study guide that explains everything from the basics to the applications of mathematics in an easy-to-understand way. - Title: Understanding High School Math A Step by Step - Publisher: Gakken - Table of Contents: Covers a wide range of topics from the basics to the applications of mathematics - Author: Hideo Kojima - Price: 1,100 yen Thank you for viewing.