How come here the f(x) is bijective given the fact that the range should be (-1,1) but in this book somehow f is declared bijective??

I started freelancing to earn money, when my 11th coaching started. I was irregularly to coaching, 12% attendance, and complete 11th is backlog. I am serious about iit, but i am fucked now. I am thinking that i should go to kota and restart my preparation its just a year wasted, i dont wanna lose my chances of getting into iit cuz of 1 bad year. The seniors who are in college now pls guide me.

I need solution with photo

How can found values of n that are satisfying given condition

how much of the syllabus is from class 12th and how much is from 11th? just need a rough idea

Dropper JEE 2025 2024: 90.XX percentile

Regrets: Started bad had good hold till mid October on studies. Then feel sick and almost for 20 days was to tired to do anything. Tried to get back to studies but couldn't do that efficiently. Lack of consistency, lack of motivation, procastination.

Goal: To stay loyal to myself and my preparation and build a habit of consistency.

Current Situation: Mock score varies b/w 115-130

Physics: A - 8/8, B - 1/9, C - 2/7, D - 5/8

Chemistry: A - 2/8, B - 1/6, C - 3/5, D - 2/6

Math: A - 1/8, B - 2/8, C - 4-7, D - 2/7

Plan: Complete Phy&Chem syllabus by 20 Dec with doing mathematics parallely. 20 Dec toh 20 Jan goes toh rigourous revision of Phy&Chem. For mathematics, till 10 Jan i'll do the chapters I had a good hold before the drop eg. DE, AOI, BT, Series&sequence, 3D, Vectors, M&D, LCD, Statistics, Straight Lines, Circle, Sets and relation, Trigonometry. and will try some new chapters like PnC, Probability and ITF.

Daily Goal: Min 12 hours every day, or 10 on very bad days till 31 May 2025.

Will keep updating the chapters list every week until syllabus completes.

title

title... is it true? some websites say yes and some say no... i registered for the first attempt as a resident of india. will i be able to change it in counselling if this eligibility criteria is true? pls help!

Guys mughe boards mai focus karna hai toh jee lecture se boards hoga kya class 11 ke kon kon se se chapter complete hone chahiye Class 12 ka toh sahi se hi for phy chem jee mains level se upar

Uske bad boards ke liye alag kya karu

Hello all, i completed last 3-4 years mains pyqs in physics and currently doing in chem too. Maths haath se nikal gya.

Physics me ray optics aur rotation rah gya hai.

Maths me bas vector 3d, quadratic , straight lines aur matrices determinants aata hai. OC chudi padi hai, goc isomerism ke alawa kuch ni aata.

Aap logo ka kitna syllabus hua?

i go to narayana where its integrated, and now the class has been divided into two sections model a for jee and model b for kcet and boards, in model a the principal keeps treating me like im the dumbest to exist whereas i'm doing better than most of her students it's breaking anything i had in me and all the motivation i once came with, and even if i forget about what she says i cant help but think im disappointing everyone around me.

what should i do?

Just saw this shit in gc , answer batao jara

Today I will Do 1)Sequence and series theory + short notes 2) Electrostatics 3) Electrochemistry 4) Mole concept

How to complete maths till mains level for the Jan attempt? (board level basics done till now)

Aj 6hrs me chem pre board hai and I'm cooked. Bs yehi bolna tha. Ik I'm helpless. bta nahi yaar ye kaha fas gya. I just want to live life peacefully. Itna nahi liya ja rha aage aur bhi kitna kuch hai. ahhh. Khair choro baki ka kya. Sb achhe raho.

Hi
For OC can I do Akshay Choudhary's book directly after IIT School modules or should I do Ms Chouhan Sir's book before it?
Also, If I decide to do AKC after mains 1, then how much time will I need to allot daily for it?
Is AKC too time consuming?

I just have a basic idea of chapters so can I get 100 marks in JEE mains January or April attempt if I start preparing for now I am in 12th currently and have boards exam too.

I mean all of chemistry, 11th and 12th

Nv sir ke lecture kha milenge full length kuch nahi aata maths ka

So maine Chemistry mein

1. IOC complete hai mera except POC
2. PC mein chemical kinetics, mole concept,atomic structure, chemical equilibrium, redox ye sab complete kiya hai

Electrochemistry 40% hua hai 3. OC mein haloalkanes tak ho chuka hai

Physics 11th ka Kinematics nlm wpe circular Solids shm hua hai 12th ka Thoda bohot ho chuka hai

Maths mein sirf vectors and 3d kiya hai

kaunsa dekhu? ellipse aur hyberbola ke liye bhi suggest kardo

CP to get the answer.

mixture of hydrogen gas and the standard compositionof air at 25°C with a total pressure of 1 atm, is exploded in a closed rigid vessel. If the combustionoccurs in an adiabatic system, given that: 

(i) CV (N2) = 8.3 calK−1mol−1

(ii) CP (H2O)= 11.3 calK−1mol−1

(iii)ΔH H2O(g)= -57.8 Kcal (Take air as 80% N2 , 20% O2 by volume)

What will be the maximum temperature attained if the process occurs in adiabatic container. 

(A) 2940 K 

(C) 1900 K 

(B) 2665 K 

(D) 298 K

As ΔrH is given shouldn’t I use CP rather than CV

I've done basic integration but didn't study AOD ,,, Can i do Area under curve without AOD?? And kaha se krlu pls tell

I Know i should study for boards but i have a lot of regrets. what if IIT is still possible

I scored only 58 (mock test for 12th syllabus only) highest was 204, i havent scored above 120 in while what to do 😭😭 aise jee hoga kya?

As of now, Chem (12th) done (100%) doing pyqs Maths (12th) 90% done doing pyq Physics (12th) done, doing pyq

Class 11: Chem 80% done (only thermo and ionic equilibrium are left) Maths 50% done (focusing mainly on pyqs) Physics 50% done (not going to watch any lectures, just topper's notes and pyqs)

Planning to wrap up everything before 27th of dec... and will start giving ONLY MOCK TEST

Is this a good plan? Or should i do something else? Like focus only on heavy weightage chapters and skip some?