NCERT Solutions for Class 12 Maths Chapter 9 – Differential Equations Exercise 9.1

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Chapter 9 – Differential Equations Exercise 9.1

1.

Q1 Class 12 differential equation based on order and degree identification
 Q1 solution identifying order 1 and degree 1 of given differential equation-Differential Equations Class 12 NCERT Solutions Exercise 9.2

2.

Q2 differential equation classification with algebraic and trigonometric terms
Q2 answer showing steps to classify order 2 and degree 1 expression-Differential Equations Class 12 NCERT Solutions Exercise 9.2

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Q3 NCERT question on finding order and degree of derivative expression
 Q3 detailed identification of order and degree from derivative form-Differential Equations Class 12 NCERT Solutions Exercise 9.2

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Q4 identify order and degree from equation involving second derivative
Q4 Class 12 solution evaluating second derivative for classification-Differential Equations Class 12 NCERT Solutions Exercise 9.2

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Q5 Class 12 Maths question on basic form of differential equation
Q5 final answer classifying order 1 differential expression-Differential Equations Class 12 NCERT Solutions Exercise 9.2

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Q6 equation with nested derivatives requiring order-degree analysis
Q6 step-by-step breakdown of derivative form to identify order-Differential Equations Class 12 NCERT Solutions Exercise 9.2

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Q7 NCERT differential equation formed from explicit function-Differential Equations Class 12 NCERT Solutions Exercise 9.2
Q7 solved differential equation formed from function by eliminating constant

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Q8 differential equation involving power of second derivative-Differential Equations Class 12 NCERT Solutions Exercise 9.2
Q8 answer showing power of second derivative and corresponding degree

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Q9 Class 12 exercise question to reduce and identify differential form-Differential Equations Class 12 NCERT Solutions Exercise 9.2
Q9 Class 12 NCERT answer identifying correct order and degree

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Q10 question on rewriting equation to obtain order and degree-Differential Equations Class 12 NCERT Solutions Exercise 9.2
Q10 rewritten equation simplified to determine order and degree

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Q11 differential form involving algebraic expression and derivatives-Differential Equations Class 12 NCERT Solutions Exercise 9.2
Q11 detailed classification of derivative terms with final answer

12.

Q12 identify order and degree from higher-order derivative expression-Differential Equations Class 12 NCERT Solutions Exercise 9.2
Q12 complete solution identifying higher-order derivative properties

Download Exercise 9.1 NCERT Solutions PDF

You can download the PDF from the link below for offline study

Class 12 Maths Chapter 9 – Differential Equations: All Exercises

ExerciseLink
Exercise 9.2View Solutions
Exercise 9.3View Solutions
Exercise 9.4View Solutions
Exercise 9.5View Solutions

Class 12 Differential Equations- Exercise 9.1 Overview

Order and degree are the most important parts of the language of differential equations in Exercise 9.1. At first, this may seem like just a theory, but it is the basis for every problem you will solve in the next tasks. This is why it’s so important to know how to correctly find these two parts of an equation. In fact, students typically have a hard time solving or even identifying differential equations later in the chapter if they don’t understand this.

Exercise 9.1 of the Differential Equations Class 12 NCERT Solutions helps you understand this subject by showing you how to solve each problem step by step. Not only will you receive the answers, but you’ll also learn how to simplify equations, get rid of radicals and fractions if you need to, and find the highest derivative. Also, you’ll practice figuring out if the equation is linear or nonlinear, which is more and more important as the chapter goes on.

The 2025 NCERT syllabus still puts more emphasis on understanding concepts than on memorizing facts. So, this exercise has the perfect mix of questions about definitions and questions about how to use logic. These answers will break down the structure clearly, even if you’re new to the idea of derivatives as equations. This will help you gain confidence before moving on to solving methods in subsequent tasks.

These methods can help you with both board exams and admission tests, whether you want to be clear or learn more. Exercise 9.1 of the Differential Equations Class 12 NCERT Solutions isn’t simply a warm-up; it’s the plan for the whole chapter. If you can do this exercise well, the rest of the unit will be much easier to understand.

FAQs – Differential Equations Class 12 Exercise 9.1 NCERT

Why do I get mixed up about the order and degree of a differential equation?

Many kids get them mixed up, so you’re not the only one. The most important thing is that order is the highest derivative and degree is the highest power of that derivative after taking out roots or fractions.

Should I make the equation easier to understand before I look for order and degree?

Yes. The equation must usually be in polynomial form. That means you might have to get rid of square roots or rational powers first. Only then can you really figure out the sequence and degree.

Is Exercise 9.1 only a theory, or does it actually help with solving differential equations?

This activity may appear like it’s just for fun, but it helps you build your base. Actually, understanding the order and degree will help you choose the right way to solve equations later in the chapter.

What happens if an equation has a function of x but no derivative?

It’s not a differential equation if there isn’t a derivative. So, figuring out if an equation is even valid is one of the things you’ll learn in Exercise 9.1.

Can these answers also help me get ready for entrance exams?

Yes, of course. Even though this activity is about the essentials, competitive tests typically examine basic notions like figuring out order and degree. That’s why it’s crucial to have a strong base here.

Class 12 Maths Chapters

Chapter 1 – Relations and Functions
Chapter 2 – Inverse Trigonometric Functions
Chapter 3 – Matrices
Chapter 4 – Determinants
Chapter 5 – Continuity and Differentiability
Chapter 6 – Application of Derivatives
Chapter 7 – Integrals
Chapter 8 – Application of Integrals
Chapter 9 – Differential Equations
Chapter 10 – Vector Algebra
Chapter 11 – Three Dimensional Geometry
Chapter 12 – Linear Programming
Chapter 13 – Probability

Important Questions for Class 12