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.

This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

When posting on Brilliant:

Use the emojis to react to an explanation, whether you're congratulating a job well done , or just really confused .
Ask specific questions about the challenge or the steps in somebody's explanation. Well-posed questions can add a lot to the discussion, but posting "I don't understand!" doesn't help anyone.
Try to contribute something new to the discussion, whether it is an extension, generalization or other idea related to the challenge.
Stay on topic — we're all here to learn more about math and science, not to hear about your favorite get-rich-quick scheme or current world events.

Markdown	Appears as
`italics` or `_italics_`	italics
`bold` or `__bold__`	bold
- bulleted - list	bulleted list
1. numbered 2. list	numbered list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1 paragraph 2	paragraph 1 paragraph 2
`[example link](https://brilliant.org)`	example link
`> This is a quote`	This is a quote
# I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world"	# I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world"

Math	Appears as
Remember to wrap math in `$` ... `$` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$

Comments

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 - 6 years, 2 months ago

@Pratik Shastri ,@Mvs Saketh ,@Raghav Vaidyanathan ,@Vraj Mehta ,@Shashwat Shukla @Azhaghu Roopesh M .

Please comment.

Ronak Agarwal - 6 years, 2 months ago

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 - 6 years, 2 months ago

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 - 6 years, 2 months ago

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 - 6 years, 2 months ago

@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 - 6 years, 2 months ago

@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 - 6 years, 2 months ago

@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 - 6 years, 2 months ago

@Mvs Saketh – You think 174 cm is SHORT ??

Both of you are really my "Bhaiyyas" in terms of height . Btw I am 164 cm .

A Former Brilliant Member - 6 years, 2 months ago

@A Former Brilliant Member – 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 - 6 years, 2 months ago

@Ronak Agarwal – Yeah , I can understand . I am not made fun of , but then again , I am indeed among the shortest guys here .

A Former Brilliant Member - 6 years, 2 months ago

@A Former Brilliant Member – just tell them you are not short, just trying to minimise your surface area like a bubble

Mvs Saketh - 6 years, 2 months ago

@Mvs Saketh – Seriously no! Physics and I are not made for each other , so I guess I'll refrain from a Physics excuse !

A Former Brilliant Member - 6 years, 2 months ago

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 - 6 years, 2 months ago

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 - 6 years, 2 months ago

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 - 6 years, 2 months ago

I am talking about CBSE board paper, people are calling that tough . Are you from CBSE board or some other one.

Ronak Agarwal - 6 years, 2 months ago

Raghav and I are from CBSE.

Shashwat Shukla - 6 years, 2 months ago

Oh my god! Of course I'm in CBSE!

Raghav Vaidyanathan - 6 years, 2 months ago

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 - 6 years, 2 months ago

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 ?)

A Former Brilliant Member - 6 years, 2 months ago

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 .

A Former Brilliant Member - 6 years, 2 months ago

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 - 6 years, 2 months ago

Yes, you'll definitely get 90

A Former Brilliant Member - 6 years, 2 months ago

Hmm, lets see.

Pratik Shastri - 6 years, 2 months ago

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 - 6 years, 2 months ago

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 - 6 years, 2 months ago

@Ronak Agarwal

Well , it seems you'll get 101/100 right ? :D

A Former Brilliant Member - 6 years, 2 months ago

I'm expecting above 90 and i think, paper wasn't tough but yes, bit lengthy.

Kïñshük Sïñgh - 6 years, 2 months ago

@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 - 6 years, 2 months ago

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 - 6 years, 2 months ago

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 .

A Former Brilliant Member - 6 years, 2 months ago

@A Former Brilliant Member – I got it from Reddit. Some Indian student from abroad posted it. Could you post your paper?

Siddhartha Srivastava - 6 years, 2 months ago

@Siddhartha Srivastava – Yup! I'll do it today .

A Former Brilliant Member - 6 years, 2 months ago

@Siddhartha Srivastava – Here's the link . Check it out :)

A Former Brilliant Member - 6 years, 2 months ago

@A Former Brilliant Member – i agree with you. it is damn easy

Mahimn Bhatt - 6 years, 2 months ago

@Mahimn Bhatt – What is your paper code ?

A Former Brilliant Member - 6 years, 2 months ago

@A Former Brilliant Member – i dont remember exactly(i have given my paper to sir) but most probably it was 65/1/A

Mahimn Bhatt - 6 years, 2 months ago

The code number was : 65/3/A .

A Former Brilliant Member - 6 years, 2 months ago

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 - 6 years, 2 months ago

@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 .

A Former Brilliant Member - 6 years, 2 months ago

@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 - 6 years, 2 months ago

@Ayush Gupta – Good to hear that atleast you fared well :)

A Former Brilliant Member - 6 years, 2 months ago

Mine 65/1/A

Ronak Agarwal - 6 years, 2 months ago

65/1/B

Mvs Saketh - 6 years, 2 months ago

Can anyone post solution to $\displaystyle\int \frac{x\cos x+\sin x \mathrm dx}{x(x+\sin x)}$

Pranjal Jain - 6 years, 2 months ago

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 - 6 years, 2 months ago

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 - 6 years, 2 months ago

Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$