This book is Senior Secondary School Mathematics for Class 11 (Class XI), 2026-27 edition, an English medium (अंग्रेज़ी माध्यम) title by R.S. Aggarwal, published by Bharati Bhawan and prepared as per the CBSE syllabus. It is written entirely in English (Roman script), with no Hindi content. R.S. Aggarwal's mathematics series is one of the most widely used names for CBSE senior secondary mathematics, and this volume covers the complete Class 11 course — sets, relations and functions, trigonometric functions, complex numbers and quadratic equations, linear inequalities, permutations and combinations, binomial theorem, sequences and series, straight lines, conic sections, three-dimensional geometry, limits and derivatives, statistics and probability. Every chapter gives step-by-step theory, a large number of solved examples, and graded exercises with answers, so students can build from the basics of a topic up to board-level problems. Key Features: English medium book — complete content written in English (Roman script), no Hindi content By R.S. Aggarwal, published by Bharati Bhawan 2026-27 edition, as per the latest CBSE syllabus for Class 11 (Class XI) Covers sets, relations and functions Covers trigonometric functions Covers complex numbers and quadratic equations, and linear inequalities Covers permutations and combinations, and binomial theorem Covers sequences and series Covers straight lines, conic sections and introduction to three-dimensional geometry Covers limits and derivatives Covers statistics and probability Detailed theory with a large number of solved examples in every chapter Graded exercises with answers for practice Suitable for CBSE Class 11 school exam preparation and as a base for competitive exams 'Senior Secondary School Mathematics for Class 11' आर.एस. अग्रवाल द्वारा लिखी गई है और Bharati Bhawan द्वारा प्रकाशित है। यह 2026-27 संस्करण CBSE कक्षा 11 (Class XI) के गणित (Mathematics) विषय के लिए CBSE पाठ्यक्रम के अनुसार तैयार किया गया है। इसमें समुच्चय, संबंध एवं फलन, त्रिकोणमितीय फलन, सम्मिश्र संख्याएँ एवं द्विघात समीकरण, रैखिक असमिकाएँ, क्रमचय एवं संचय, द्विपद प्रमेय, अनुक्रम एवं श्रेणी, सरल रेखाएँ, शंकु परिच्छेद, त्रिविमीय ज्यामिति, सीमा एवं अवकलज, सांख्यिकी तथा प्रायिकता को कवर किया गया है, साथ ही विस्तृत सिद्धांत, हल किए गए उदाहरण एवं उत्तर सहित अभ्यास प्रश्न भी दिए गए हैं। ध्यान दें: यह पुस्तक पूर्णतः अंग्रेज़ी भाषा एवं रोमन लिपि में है, हिन्दी में नहीं।