# Decoding the Reduced CBSE Syllabus for 2020-21

What kind of Questions can be asked from various topics in Maths?

Let’s try to understand.

Dear math scholars

While making Sample Papers for class 12, I had to take immense care about what kind of questions to put in these papers. I discussed with many of my colleagues, senior faculties having experience of over two-three decades and with some CBSE stake holders as well.

Due to the outbreak of pandemic this session, CBSE has reduced syllabus for 2020-21. It has caused a bit of confusion among math teachers in some chapters. Note that CBSE has only mentioned which topics are to be studied this session – means, the **Board didnâ€™t issue a specific list of questions **from each chapter which may not be asked in the final exams. As far as my understanding, CBSE may test students on any questions – provided we have an **alternative solution**, within the boundations of reduced syllabus.

For example, many teachers are of the view that question like, **Show that tan ^{-1}(1/2)+tan^{-1}(1/3)=đťť…/4 ** is not in syllabus now – as Properties of inverse trig. functions are deleted.

But with an alternative approach, these questions can still be asked in CBSE 2021 Exams. Can you think of an approach other than using properties, for the above question?

My view is same for other chapters and related questions, where alternative approach can be used.

So, I advocate teaching anything and everything that you used to teach. And, leave only those topics and related questions where there is no confusion.

For example, linear differential equations of the form **dx/dy + P(y) x = Q(y) **Â are deleted. It has no confusion, so we can skip it.

But, then consider this question : **Solve the differential equation (x – y) (dy/dx) = 1**. What do you think about it? Is it in syllabus for 2020-21 or not? Well, if you think it is not in syllabus as the given differential equation is Linear D.E. in x then, please check Q24 in my test **PTS 04** and its **Solutions** at this link.

As much as I hate to admit it, I am not perfect. Though I have put in my best efforts and intentions to understand this syllabus reduction proposed by CBSE. Still I believe that my apprehensions may need improvements. Please feel free to offer your constructive suggestions to understand these aspects. Letâ€™s have a healthy discussion.

Please **write in your Comments below** to this blog.

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*With lots of blessings and best wishes,*

*– O.P. GUPTA, Math Mentor*

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## 13 Comments

Thanks for the opportunity to learn and share. This question can be solved by taking tan^-1 (1/2) = x and tan^-1 (1/3) = y. Then it becomes x + y = pie/4 then taking tan on both sides they can be proved equal.

Perfect đź‘Ś

As in the CBSE syllabus it is mentioned that All questions which are of the form dx/dy + Px = Q are deleted.

But in my opinion if any alternative method is there to solve such questions which are still the part of syllabus, so I think then it could be asked.

I am of the opinion that knowing more never harms but lack of information does. So for a class XII child, whatever is there in NCERT syllabus should be taught as mere deletion of few topics (part of chapter) would not serve the purpose as the student has to face competitive exams in future. So the teachers must understand that the deleted portion WILL NOT be a part of assessment. Toh padha lo Bhai âśŚď¸Ź. Thank you for your efforts for students Gupta Sir. Keep up the spirit!

Well explained, thanks Shivani ma’am đź‘Ź

Thanks for the clarifications.

Certainly, questions that can be solved using alternate method can be asked in board. Deletion of a topic can be mentioned as per CBSE reduced syllabus document but deletion of questions should be carefully commented upon. Certain topics like elementary row and column operations can be overlooked but certain other topics like properties of inverse trigonometric functions and area under two curves are quite relevant and useful from competitive exams point of view. There is no harm discussing such topics. I believe even if a student solves a question using method from NCERT that has been otherwise deleted won’t loose on any marks. So, keep discussions open with your students on all ends.

Agree to your views, thanks for writing âśŤ in. In fact, having a bit extra knowledge doesn’t harm but, lack of knowledge certainly may harm.

Yes, I too agree that with an alternate approach lots of questions, eg in Probability, differential equations, inverse trigonometric functions, relations and functions, can be done.

Thanks for writing in, ma’am.

Mr. Gupta I agree with you. This type of clarification was of much need. There are many list of deleted questions by various teachers. It has created a lot of confusions in teachers and students. But after reading this article, I feel much clarity now. Please keep sharing your expertise with us in future too. Thank you sir

Thanks for writing in, Sir.

Very true sir as CBSE has deleted some part of syllabus but its better to teach all as sufficient time is there and more over as ITF properties are deleted but for differentiation of inverse trig. functions simplification is required so y not to teach all.

Sir as you have mentioned in your Blog Linear differential equation of second type is deleted so yes we can skip, similarly inverse of matrix by elementary operations can be skipped, composite and inverse of function can be skipped, limit as sum can be skipped, Binary operations can be skipped, Binomial distribution can also be skipped but still try to teach the maximum you can.

We as teachers should always be ready to help students and should not go with what is deleted but try to teach extra only.

Thank you Gupta sir, I was able to express my point of view after reading your article. Keep us motivating and updating.