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How's your maths paper

Again out of curiousity, I am posting this note adressed to all my friends who are giving 12th Boards.

How's your maths paper and how much are you expecting.

Again one can discuss anything here.

Note by Ronak Agarwal
1 year, 10 months ago

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The paper was easy but I had only 5 minutes left to revise. I think I got every question correct with all necessary steps but as I couldn't revise properly, might lose some marks in careless mistakes. Definitely 95+. Hoping for 98-100. Shashwat Shukla · 1 year, 10 months ago

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Does anyone have I.P previous year question paper along with the solution(all sets). Can anyone send the link regarding the same? Mahimn Bhatt · 1 year, 10 months ago

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Can anyone post solution to \(\displaystyle\int \frac{x\cos x+\sin x \mathrm dx}{x(x+\sin x)}\) Pranjal Jain · 1 year, 10 months ago

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@Pranjal Jain I know the answer to the problem with the minus sign in the numerator but not this one.

I have the answer as :

\[\displaystyle I = \int { \frac { x\cos { x } -\sin { x } }{ x(x+\sin { x } ) } dx } = \int { \frac { (x\cos { x } +x)-(x+\sin { x } ) }{ x(x+\sin { x } ) } dx }\]

\[ I = \ln { (1+\dfrac { \sin { x } }{ x } ) } \]

Sorry but I don't have the answer to your problem. Ronak Agarwal · 1 year, 10 months ago

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@Ronak Agarwal @Vraj Mehta @Azhaghu Roopesh M @Mvs Saketh

Guys, can you please tell me your question paper codes? Not just the set number, but also the code, mine is 65/2/MT. I have been running into a lot of complaints about the exam wherever I turn, even in the newspaper, there were two separate articles about it. Please do reply. Raghav Vaidyanathan · 1 year, 10 months ago

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@Raghav Vaidyanathan 65/1/B Mvs Saketh · 1 year, 10 months ago

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@Raghav Vaidyanathan Mine 65/1/A Ronak Agarwal · 1 year, 10 months ago

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@Raghav Vaidyanathan Hi

The code number was : 65/3/A . Azhaghu Roopesh M · 1 year, 10 months ago

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@Azhaghu Roopesh M Here is the link to my paper: 65/2/MT

@Azhaghu Roopesh M @Siddhartha Srivastava @Ronak Agarwal @Mvs Saketh This paper must be the easiest one. Raghav Vaidyanathan · 1 year, 10 months ago

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@Raghav Vaidyanathan You better not be kidding me ! That's too easy , really .

See the note that I posted , my paper was relatively lengthy . I'm sure you'll agree . Azhaghu Roopesh M · 1 year, 10 months ago

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@Raghav Vaidyanathan Hi The paper we got in Delhi was different from this and for me it was not difficult but lengthy. got no time to revise I did some very stupid mistakes ( like 3 X 2=5 due to which i lost 1 mark ) expecting around 93-95. Ayush Gupta · 1 year, 10 months ago

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@Ayush Gupta Good to hear that atleast you fared well :) Azhaghu Roopesh M · 1 year, 10 months ago

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@Raghav Vaidyanathan I didn't give the exam, but I've seen one set 65/2/2/F. One question was wrong in it. Q20 first part. Siddhartha Srivastava · 1 year, 10 months ago

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@Siddhartha Srivastava What the hell dude ??? You've got to be kidding me !

Are you sure that the link you've provided is the paper of this year ? That one's toooooo simple . Azhaghu Roopesh M · 1 year, 10 months ago

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@Azhaghu Roopesh M i agree with you. it is damn easy Mahimn Bhatt · 1 year, 10 months ago

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@Mahimn Bhatt What is your paper code ? Azhaghu Roopesh M · 1 year, 10 months ago

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@Azhaghu Roopesh M i dont remember exactly(i have given my paper to sir) but most probably it was 65/1/A Mahimn Bhatt · 1 year, 10 months ago

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@Azhaghu Roopesh M I got it from Reddit. Some Indian student from abroad posted it. Could you post your paper? Siddhartha Srivastava · 1 year, 10 months ago

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@Siddhartha Srivastava Here's the link . Check it out :) Azhaghu Roopesh M · 1 year, 10 months ago

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@Siddhartha Srivastava Yup! I'll do it today . Azhaghu Roopesh M · 1 year, 10 months ago

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I'm expecting above 90 and i think, paper wasn't tough but yes, bit lengthy. Kïñshük Sïñgh · 1 year, 10 months ago

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Well, everyone can pretty much add 2-3 marks to their expected score. http://www.thehindu.com/news/national/cbse-maths-exam-board-mulls-grace-marking/article7011799.ece?mstac=0 Siddhartha Srivastava · 1 year, 10 months ago

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@Siddhartha Srivastava @Ronak Agarwal

Well , it seems you'll get 101/100 right ? :D Azhaghu Roopesh M · 1 year, 10 months ago

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I am expecting above 90. The sad part is i realized two of my mistakes yesterday only. The paper was kind of moderate but difficult as compared to last year's paper. Mahimn Bhatt · 1 year, 10 months ago

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Disastrous. I don't know why but I skipped past the binary operations 6 marker. I literally didn't see it. And the sad thing is that it probably was the easiest 6 marker of the lot. Expecting anywhere between 85-90. Pratik Shastri · 1 year, 10 months ago

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@Pratik Shastri Yes, you'll definitely get 90 Azhaghu Roopesh M · 1 year, 10 months ago

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@Azhaghu Roopesh M Hmm, lets see. Pratik Shastri · 1 year, 10 months ago

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Hmm , I think I'll get between 85-90 (yes , I had a definitely bad outing there)

But I'm just focusing on JEE Advanced right now , so I think it's no big deal . Azhaghu Roopesh M · 1 year, 10 months ago

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Definitely 88-90 ,Will only loss marks if there are any silly mistakes or calculation error..

Also On the difficulty of the paper,for us preparing for advance the paper was not that challenging but for the ones who have taken Maths as A fifth subject it was a disaster..

I remember a girl seeing a girl crying during the exam..

Roopesh Must have seen it too.We were in the same room..:3 :3

But All left is IP which is a very interesting Subject..What are you planning to Study???Ronak Agarwal And Roopesh..

Since I know only two of you having taken IP on Brilliant.. Vraj Mehta · 1 year, 10 months ago

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@Vraj Mehta No , I didn't see anyone crying . You see I had my own problems to deal with .

Would you mind writing the initial of the one who was crying ?

Seriously , YOU are going to study IP ?? I am just going to read the Chapters 1,2 and the last Chapter (was it 16th ?) Azhaghu Roopesh M · 1 year, 10 months ago

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The paper was very easy for me and almost all of my friends and classmates. I do not know why people are saying that it was tough. Strongly believe that there was some difference between my question paper and yours. My qp code is 65/2/MT. A lot of my friends finished almost 30 min before time. @Ronak Agarwal Raghav Vaidyanathan · 1 year, 10 months ago

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@Raghav Vaidyanathan I am talking about CBSE board paper, people are calling that tough . Are you from CBSE board or some other one. Ronak Agarwal · 1 year, 10 months ago

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@Ronak Agarwal Oh my god! Of course I'm in CBSE! Raghav Vaidyanathan · 1 year, 10 months ago

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@Ronak Agarwal Raghav and I are from CBSE. Shashwat Shukla · 1 year, 10 months ago

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Just wanted to ask, are there people out here who are having Physical Education as their 5th subject ?

If yes, then please tell how are you preparing for the exam ?? I am just reading the chapters from the book, will it do ? Karan Siwach · 1 year, 10 months ago

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I think, I will definitely score in between 95 and 99.

Not sure if I have done the question of getting expression 'A^2 -5A+4I' given matrix 'A' correctly, I think I have copied 'A' wrongly from the question paper. Karan Siwach · 1 year, 10 months ago

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definitely above 90, only place where i might lose marks are the question which was asked to be solved by matrix method, Though i did solve it using matrices only by some how converting it into a matrix problem . what about you? Mvs Saketh · 1 year, 10 months ago

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@Mvs Saketh I am expecting around 99/100 if everything I have written contained no silly mistakes well 1 marks I am losing because in a 6 marks question after completing solving at last I wrote the answer as \(2(\sqrt{2}+\sqrt{2})=2\sqrt{2}\)

Also is this your actual photo, you have as your profile pic. Ronak Agarwal · 1 year, 10 months ago

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@Ronak Agarwal Can you please tell question number, i do not remember ever writing \(4 ( {2}^{1/2})\) in answer sheet,

Yes it is, My JEE main profile pic Mvs Saketh · 1 year, 10 months ago

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@Mvs Saketh I had Set-1 Q21. Minimum value of OA+OB.

You look quite a big boy, your image doesn't look like that of an 17 year old boy. Ronak Agarwal · 1 year, 10 months ago

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@Ronak Agarwal oh its fine then, either that question wasnt in my set or maybe it was in option,

Actually, it is camera effect, i am just 174cm long , shorter than you as well perhaps.

And, no, i did the Miscellanious exercices from CBSE before board exam and two to three integration questions were from there only, I do not know why some of these parents demand retest because their kid is an idiot . Infact, i finished it 40 mins ago and rechecked it twice, and they say time was low, infact some were telling me to ask for retest as well Mvs Saketh · 1 year, 10 months ago

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@Mvs Saketh You think 174 cm is SHORT ??

Both of you are really my "Bhaiyyas" in terms of height . Btw I am 164 cm . Azhaghu Roopesh M · 1 year, 10 months ago

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@Azhaghu Roopesh M I am 166 only, among my friends I am the shortest, way shorter than each one of them. I am joked too much about my height. Ronak Agarwal · 1 year, 10 months ago

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@Ronak Agarwal Yeah , I can understand . I am not made fun of , but then again , I am indeed among the shortest guys here . Azhaghu Roopesh M · 1 year, 10 months ago

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@Azhaghu Roopesh M just tell them you are not short, just trying to minimise your surface area like a bubble Mvs Saketh · 1 year, 10 months ago

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@Mvs Saketh Seriously no! Physics and I are not made for each other , so I guess I'll refrain from a Physics excuse ! Azhaghu Roopesh M · 1 year, 10 months ago

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@Mvs Saketh I am quite a short kid my height being 166 cm. You were very fast, although the paper was easy, I just finished 10 minutes before.

Also I was not commenting on height, I was commenting about age. Ronak Agarwal · 1 year, 10 months ago

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Comment deleted Mar 19, 2015

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@Karan Siwach You gave the CBSE paper right. Ronak Agarwal · 1 year, 10 months ago

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@Ronak Agarwal yes , CBSE Delhi region. Karan Siwach · 1 year, 10 months ago

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@Karan Siwach Was the paper really tough and questions were not from NCERT( I don't know since I have not read NCERT nor done a single exercise of it) , cause lot of people were complaining about the paper and demanding for retest, you can check the net about this. Ronak Agarwal · 1 year, 10 months ago

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@Ronak Agarwal :o You haven't done NCERT at all? Then how did you... prepare all those LPP shit? (I know that you're a genius but still) and dont they teach NCERT at your school and dont you hafta do it o'er there? Krishna Ar · 1 year, 10 months ago

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@Krishna Ar I haven't done any exercise of NCERT at all, but I did read what LPP is since I checked out the topics that were not in IIT-JEE Advanced but in CBSE boards, and LPP was one of them. But it was easy since the only thing I need to know is that maximum or minimum of a linear function bound by linear constraints occur at corner points of a feasible region.

Also teachers at school taught NCERT but I often skipped coming to school and at school also I did my coaching material, that interested me much more that the school stuff.

By not reading NCERT I meant not reading it's textual matter in detail, I did try to read topics that were yet not done in coaching some time before but I can't understand anything,( they have explained it quite badly), still I seriously didn't know about the question in NCERT since I have not solved even a single one of them.

Also I am not genius, since genius people are people like Sheshansh Agarwal( 3 time astronomy gold medalist cleared this year both INCHO , INPHO with a big, big margin), Bhavya Chaudhry( KVPY first rank, Juniour Astronomy gold medalist), and people like you ( your achievements are uncountable). Ronak Agarwal · 1 year, 10 months ago

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@Ronak Agarwal XP (for the last part of the last line). I agree to everything else here. NCERT is a very bad teacher, almost as worse as my 10th grade physics teacher(who once said that Red has the minimum wavelength in the spectrum). You too are a genius ; you have a chance to represent India ;) (in fact, i aint one:- i dont even want to call those achievements as "achievements"). BTW can you answer this question : when and how did you learn calculus? Thanz Krishna Ar · 1 year, 10 months ago

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@Krishna Ar This is an interesting question and it has an interesting answer, in class 8th or proabably 9th ( I can't correctly remember) , I learnt the formula for finding volume of a sphere and I was so awe struck at how it came, I thought for about 10 days for this and searched throughout the net for an simple answer, but it couldn't get simpler than calculus. This word at that time was strange for me( I thought it was somewhat related to some calculations hence the name calculus), and those weird integration signs I just can't understand.

First approach I thought to tackle this problem was to cut the sphere into thin discs of finite thickness and calculating the volume and reduce the thickness all the way to zero, this approach was good but I can't handle the summation though, also I can't work up the expression. Finally I decided to learn calculus from basics. But I didn't have any books for reading about this( well I had a handbook that consisted of many formulas I can't understand a single one of them ) hence I again searched up net, and then I found this :

Wikibooks- Calculus.

It nicely started with the concept of functions followed by limits,tangents, derivatives, rules of differentiation,rolle's theorom,lagrange mean value theorom ,application of derivatives in kinematics, and maxima and minima(first derivative and second derivative test) and everything was so interesting( yet I can't understand it clearly)

Finally I started with second part INTEGRATION, it started with riemann sums with a nice introduction and how area is calculated by small strips approach, then came the fundamental theorom of calculus Part 1, Part 2, and the rigorous proofs ( It took me a day to understand the proof of it.), and than proceded with techniques of integration like substitution,by parts, trignometric substitution, partial fractions , trignometric integrals, and all.

Finally I understood the proof of volume of sphere. But till that I have learnt a large lot in calculus, I believe that was in 9 th most probably. Ronak Agarwal · 1 year, 10 months ago

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@Ronak Agarwal Cool. Thanks :) Really nice & inspiring read! (Shocking too, 'cause you got exposed to this branch of math so early! :P) Krishna Ar · 1 year, 10 months ago

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@Krishna Ar Calc is good , isn't it Bio guy ? :P Azhaghu Roopesh M · 1 year, 10 months ago

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@Azhaghu Roopesh M I know not even a morsel of calculus, if what you, Ronak and other people know is equal to a ricecake. Krishna Ar · 1 year, 10 months ago

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@Krishna Ar Now that you mention it ,it's been a long time since I've eaten one! And September 17 seems quite far away :( Azhaghu Roopesh M · 1 year, 10 months ago

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@Ronak Agarwal The paper was easy for all of us as we are preparing for jee but for students only studying for boards, It was a tough paper.

And yes, questions were not from NCERT. Karan Siwach · 1 year, 10 months ago

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Comment deleted Mar 21, 2015

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@Harsh Soni how much are you expecting, if you assume whatever you attempted and believe that you have done correctly is actually correct. Ronak Agarwal · 1 year, 10 months ago

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