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📘 Modulus of a Complex Number – Concept, Properties & JEE Applications

Understanding the modulus of a complex number is essential for mastering the chapter Complex Numbers in Class 11 Mathematics, and it plays a significant role in JEE Main and Advanced. Whether you’re using Cengage, Arihant, or RD Sharma, modulus forms the base for many key concepts and questions. In this blog post, we’ll break it down with a clear explanation, properties, geometric insight, and a…

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🧠 Understanding the Conjugate of a Complex Number

Class 11 Maths | JEE Foundation | By 9nid 📘 Introduction In the world of complex numbers, the conjugate plays a vital role — not just in algebra but also in geometry, coordinate systems, and problem-solving for JEE Mains, Advanced, and other competitive exams. Let’s dive into what a conjugate is, how it works, and why it’s important. 🔍 What is a Complex Number? A complex number is of the…

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✅ Complex Numbers Checkpoint-01 – Class 11 Maths | Practice & Revision by 9nid & IITKiTayyari

After learning about iota powers and algebraic operations on complex numbers in our first two lectures, it’s time to revise and test your concepts. This Checkpoint-01 video is designed to help you reinforce everything you’ve learned with a variety of question-based practice. 🔁 What’s Covered in This Checkpoint? Quick recap of iota powers and their patterns Algebraic operations (add, subtract,…

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📘 Algebraic Operations on Complex Numbers – Class 11 Maths | Complete Guide by 9nid & IITKiTayyari

If you’re a Class 11 student or preparing for IIT-JEE or competitive exams, mastering complex numbers is essential. In this post, we’ll break down algebraic operations on complex numbers — one of the most foundational topics in higher mathematics. This blog is based on our latest YouTube video from the 9nid and IITKiTayyari YouTube channels. You can watch the full lecture for visual…

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📘 Understanding the Integral Powers of i (iota) in Complex Numbers – Class 11 Maths

Complex numbers are a critical part of Class 11 Mathematics and lay the foundation for higher studies in engineering, physics, and computer science. Among the most common doubts students have is how to deal with integral powers of i, also known as iota. In this blog post, we will break down the powers of i (iⁿ), understand their pattern, and explore shortcut tricks to calculate them quickly. 🔹…

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Mastering Special Series in Geometric Progression (7+77+777+... & 0.3+0.33+...) - Complete Guide

Geometric Progressions (GP) become fascinating when we encounter special series like: 7 + 77 + 777 + 7777 + … to n terms 0.3 + 0.33 + 0.333 + 0.3333 + … to n terms (and infinite terms) In this comprehensive guide (based on 9nid’s YouTube Video – Geometric Progression Part 3), we’ll break down:✓ The step-by-step method to solve these series✓ How to find sums for finite AND infinite terms✓…

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🧠 Mastering the Sum of Geometric Progression (GP) – With Easy Examples | JEE Series by 9nid

Geometric Progression (GP) is one of the most scoring topics in JEE Mathematics, and when taught with clarity—it can be a game changer. In this blog post, we’ll simplify the concept of Sum of GP, explain important formulas, and walk through solved examples exactly as discussed in our latest video. 🎥 Watch the Full Video Here:📌 Sum of GP Explained with Examples | JEE Series – 9nid ✍️ What Is a…

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📊 Playing with Graphs – Graphs of x^n Functions | JEE Graph Series Part-2 by 9nid

Visual learning is one of the most effective tools in mathematics, especially when preparing for competitive exams like JEE Mains & Advanced. In Part-22 of our JEE Series, we dive deep into one of the most commonly tested and conceptually rich graph families — the x^n functions. 🔍 Why Focus on x^n Graphs? The family of functions defined by f(x) = x^n (where n is a real number) appear in topics…

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One Step Forward: Your Real Journey Starts Now | @9nid

Ever feel like your dreams are too big… and you’re too small? What if I told you that every creator, every topper, every success story you admire started exactly where you are—unsure, unprepared, but willing to take just one step? On this channel—@9nid—we talk real. Real hustle.Real setbacks.And real growth. You don’t need to have it all figured out. You don’t need the best gear, the perfect…

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Mastering Arithmetic Means: The Secret Bridge in Arithmetic Progression (AP)

Ever wondered how mathematicians “build bridges” between two numbers in a sequence?What if I told you there’s a formula that lets you construct a whole pathway of numbers—perfectly spaced and logically beautiful? Welcome to the world of Arithmetic Means! 🧠 Introduction In your JEE journey, understanding the “Sequence and Series” chapter is absolutely crucial. One concept that often appears…

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🧠 JEE Series Part-19: Master Practice Questions on Arithmetic Progression (AP) – Based on Tₙ & Sₙ

You’ve understood the formulas. You’ve watched the lectures.But can you apply your AP concepts at JEE speed when it matters the most? In Part-19 of our JEE Series, we throw you into the battlefield—armed only with your concepts of Tₙ (nth term) and Sₙ (sum of n terms)—to solve JEE-level questions that test both speed and smarts.Let’s see if you’re truly AP-ready! 💥 Welcome to another powerful…

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📘 JEE Series Part-18 | Arithmetic Progression (AP) Part-02 – Deep Dive into Core Concepts

Welcome to Part-18 of the 9nid JEE Series, your ultimate Hinglish learning zone for mastering JEE Maths with clarity and confidence. In this session, we go deeper into Arithmetic Progression (AP) — one of the most scoring topics in Sequence and Series for JEE Main and Advanced. 🔍 What’s Covered in This Video? In this video, we move beyond the basics of AP and explore more conceptual and…

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🧠 Master Graphical Applications of Quadratic Equations – Part 2 | JEE Series Part-15 | By 9nid

🎯 Introduction Quadratic Equations are one of the most tested and important topics in JEE Mathematics, and understanding their graphical behavior can make even the toughest questions feel easy! In Part-15 of the JEE Series by @9nid, we dive deeper into the Graphical Application of Quadratic Equations (Part-2) — focused on visualizing inequalities and interpreting expressions using…

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🎯 Master the Graphical Method to Solve Inequalities for JEE | JEE Series Part-10 | 9nid

📖 Introduction: Solving inequalities is one of the most important concepts in JEE Mathematics, and if you’re preparing seriously, then the Graphical Method is a tool you must master. In Part-10 of the JEE Series by 9nid, we dive deep into the Graphical Approach to Inequalities, explaining how to visualize and solve even the trickiest algebraic inequalities with confidence. This session is…

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JEE Series Part-09 | Solving Inequalities – 03 | Compound Inequalities | JEE Maths in Hinglish | @9nid

Welcome back to the JEE Series by 9nid!In Part-09, we’re diving into an important concept: Compound Inequalities — a must-know for scoring in JEE Mains & Advanced. 🧠 What You’ll Learn in This Video: What are compound inequalities Solving AND & OR inequalities Number line visualization for compound solutions Shortcut methods to handle multi-inequality expressions Real JEE-level examples –…

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🎥 JEE Series Part-08 (Solving Inequalities - 02)

📘 JEE Series Part-08: Quadratic Inequalities Made Easy | 9nid Hinglish JEE Maths In this part of the 9nid JEE Series, we explore how to solve Quadratic Inequalities, a crucial topic in the Algebra section of JEE Maths. You’ll learn: What makes quadratic inequalities different from linear ones How to solve them using factorization and sign analysis Common mistakes students make in…

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📘 JEE Series Part-07: Solving Inequalities – 01

In this latest episode of the 9nid JEE Maths Series, we’re diving into the world of linear inequalities! 🧠 This video is perfect for JEE aspirants who want to: Master solving inequalities from scratch Understand graph-based solutions Tackle JEE-style problems with clarity Learn in Hinglish for better understanding and comfort Whether you’re starting out or reviewing for JEE 2025, this…