Introduction
Preparing for the UPSC Mathematics Optional subject requires a balance between speed and accuracy. To enhance these skills, it is important to refer to reliable journals and publications that provide valuable tips and strategies. Here are some renowned publications that offer guidance for improving speed and accuracy in UPSC Mathematics Optional subject:

1. Mathematics Today
Mathematics Today is a widely recognized monthly journal that caters to the needs of students preparing for competitive exams. It covers various topics related to mathematics, including tips and techniques to solve questions quickly and accurately. The journal provides comprehensive solutions to previous years' question papers, allowing candidates to understand the exam pattern and practice effectively.

2. Mathematics for Competitive Examinations
This publication by R.S. Aggarwal is a comprehensive guide specifically designed for competitive exams. It offers a detailed explanation of mathematical concepts, along with solved examples and practice exercises. The book also includes time-saving shortcuts and strategies to quickly solve complex problems. It is highly recommended for UPSC aspirants aiming to enhance their speed and accuracy in the Mathematics Optional subject.

3. Mathematics Spectrum
Mathematics Spectrum is a monthly magazine that focuses on various mathematical concepts and their applications. It provides tips and tricks to solve problems efficiently, along with practice exercises for thorough understanding. The magazine also features articles by renowned mathematicians, helping students gain insights into advanced topics and enhancing their problem-solving abilities.

4. Mathematics Optional Guidebooks
Several guidebooks available in the market are specifically tailored for UPSC Mathematics Optional subject. These guidebooks often contain chapter-wise explanations, shortcut techniques, and practice questions. They provide comprehensive coverage of the syllabus and help aspirants develop a strong foundation in the subject while improving their speed and accuracy.

Conclusion
To excel in the UPSC Mathematics Optional subject, it is crucial to refer to reliable journals and publications that offer tips and strategies for improving speed and accuracy. Publications like Mathematics Today, Mathematics for Competitive Examinations, Mathematics Spectrum, and Mathematics Optional Guidebooks provide valuable insights, shortcut techniques, and practice exercises to enhance problem-solving abilities. Regular practice and consistent study using these resources can significantly improve performance in the UPSC Mathematics Optional subject.