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    • Posted by Priyanka Dalai 4 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 3 answers

    Nikhil Kumar 4 years, 2 months ago

    f[1] = 1 f[1.2] = 1 f[1.9] = 1 f[1.99] = 1 Since different elements have same image 1 , f is not one - one CHECK ONTO , f(x) =[x] Let , y=f[x] y=[x] i.e , y= Greatest integer less than or equal to x . Hence , value of y will always come an integer . But y is a real number . Hence f is not onto

    1Thank You

    Shree Ram Faujdar 4 years, 2 months ago

    How are you ji

    0Thank You

    Shree Ram Faujdar 4 years, 2 months ago

    Hello ji

    0Thank You

    ANSWER

    • Posted by Shraddha ✨ 4 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Shraddha ✨ 4 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 3 answers

    Khushboo Gupta 4 years, 2 months ago

    Question=tan^2(sec^-1 2 )+ cot^2 (cosec^-1 3) Solution= sec^2(sec^-1 2)-1+cosec^2(cosec^-1 3)-1 = 2^2×1+3^2-2 =11(answer)

    3Thank You

    Khushboo Gupta 4 years, 2 months ago

    11 answer hai

    1Thank You

    Shree Ram Faujdar 4 years, 2 months ago

    Ji kya likha hai kuch smj mein ni aya??

    2Thank You

    ANSWER

    • Posted by Richa Saha 4 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Anushka Chahar 4 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Aakansha Choudhary 4 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Ashish Mor 4 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Khushi Shahi 4 years, 2 months ago

    By using formula tan(a+b)

    0Thank You

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    • Posted by Karn Dev Singh Parihar 4 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Dhivya Shanthi 4 years, 2 months ago

    853.58

    1Thank You

    ANSWER

    • Posted by Krish Kumar 4 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 2 answers

    Mishti ???? 4 years, 2 months ago

    By practising more objective one because after knowing the subjective part or theory sometimes we r not able to do them because of lack of deep knowledge of concept & main the practise of such type s of questions?? U can find diffrent websites objective questions to make strong u'r practice. Hope it will help u ?? Regards. ??

    1Thank You

    Tannu Rao 4 years, 2 months ago

    For this, u must have proper understanding of basic concepts bcoz 1 markers usually test our understanding of a particular topic. Also u must have enough practice to have speed and accuracy both.

    0Thank You

    ANSWER

    • Posted by Jashan Maan 4 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Khushi Shahi 4 years, 2 months ago

    ANSWER R={(x,y:x,y∈z,x−yisdivisiblebyn}ForReflexive,x∈zSo⇒(x−x)isdivisiblebyn⇒(x,x)∈z​ So, Relation is Reflexive ForSymmetric⇒Let(x,y)∈R⇒(x−y)isdivisiblebyn.⇒nx−y​=c,Remainderis0.⇒ny−x​=−c,Remainderisalso0.⇒(y−x)isdivisiblebyn(y,x)∈RSo,RisSymmetric.ForTransitive⇒Let(x,y)∈R&(y,z)∈R⇒(x−y)isdivisiblebyn⇒(y−q)isdivisiblebyn​ add both these equation (i) & (ii) (x−y)=xc,c∈z−v,(y−q)=na,(a∈z)⇒(x−y+y−q)=nc+na,c,a∈z⇒(x−q)=n(a+c),c,a∈z(x−q)isdivisiblebyn⇒(x,q)∈R​ So, R is Transitive So, the R is Reflexive, Symmetric and Transitive Then it is Equivalence Relation.

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    • Posted by Yazhini Raja 4 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Manpreet Kaur 4 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Suryakant Swain 4 years, 2 months ago

    ln|secx|+c

    0Thank You

    ANSWER

    • Posted by Bharat Choudhary 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Yogita Ingle 4 years, 3 months ago

    Onto function could be explained by considering two sets, Set A and Set B, which consist of elements. If for every element of B, there is at least one or more than one element matching with A, then the function is said to be onto function or surjective function. The term for the surjective function was introduced by Nicolas Bourbaki.

    1Thank You

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    • Posted by Yashika Yadav 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 3 answers

    Ashish Kumar Khosla 892026 4 years, 3 months ago

    X^3

    0Thank You

    Ajay Kumar Meena 4 years, 3 months ago

    X^3

    0Thank You

    Praduman Sharma 4 years, 3 months ago

    x³

    0Thank You

    ANSWER

    • Posted by Udit Thardak 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Chahek Malhotra 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Ashok Saw 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Gungun Arya Gupta 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 2 answers

    Gungun Arya Gupta 4 years, 2 months ago

    Thanks for help

    0Thank You

    Gaurav Seth 4 years, 3 months ago

    1. Understand the contents and weightage of the syllabus

    Firstly, go through the latest CBSE Class 12th Maths syllabus 2020, where you will find the weightage of different units 

    2. Preparation from NCERT textbooks is the most important part

    Though supplementary books may be used as references, the NCERT textbooks offer an exhaustive range of exercise questions and solved examples on every topic, which is more than enough to do well in your board examinations.

    3. Strategize and THEN prepare!

    The long form questions (5-6 marks), which are the most feared aspect of a paper, usually come from one of the following sections:

    • Calculus, which carries a whopping 44% weightage, and can be really scoring
    • Differential Equations consisting of the application based difficult questions.
    • Vectors and 3D geometry carry the next highest 17% weightage.

    The aforementioned topics are practice-based and the best way to gain perfection in them is to practice and solve more and more problems on them. Then,

    • Probability, Relations and Functions and Algebra have a weightage of 10%, 10% and 13% respectively.
    • Linear Programming: 6%

    4. Practice sample papers and previous years’ papers

    Examiners follow a pattern of repetition for specific important questions over a number of years, which is why it is very important to go through previous years’ papers.

    Make sure that you solve the last few year’s papers on a timer, it will improve your speed, reasoning ability, and time management skills.

     

    5. Say goodbye to rote learning!

    Mathematics is all about understanding the concepts. So mugging up is not going to be of much help on the day of the examination.

    Try to understand the fundamentals of the formulas; usually, they are all based on a single conceptual framework, and once you understand that, you can automatically do away with the mugging up of endless formulas.

     

    6. Self-evaluation

    As a step toward feeling less anxious, start by acknowledging your grey areas and your weaknesses.

    Devote more time to improving them instead of making yourself feel bad about it. Maintaining a peaceful frame of mind is more significant than any preparation.

     

    7. Presentation is very important

    Neat work is a non-negotiable perk that always benefits a student. Make sure to label the graphs and figures properly.

    Avoid overwriting and scribbling, if you’ve made a mistake then strike it off and start from below. Always leave some space between two questions, and start a new section on a fresh page.

     

    8. Time management

    The reading time is the most crucial and must be used judiciously. This involves reading the paper thoroughly, especially the ones involving statements, underlining keywords and then choosing the most scoring questions based on your understanding.

    If you’re stuck on a question, leave some space and keep moving forward. You can revisit it later with a fresh mind.

    Always keep 15-20 minutes buffer time for revising and rectifying your answers at the end.

    4Thank You

    ANSWER

    • Posted by Roshnee Nayak 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Aman Bedi 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 2 answers

    Aman Bedi 4 years, 3 months ago

    Ans is 24

    1Thank You

    Udit Thardak 4 years, 3 months ago

    If x=3, than after putting value in equation Y= 27-9+2 = 20 Now taking derivative on both sides in equation dy/dx= 3x² At(3,20) dy/dx = 3(9)= 27 So slope of tangent in 27

    0Thank You

    ANSWER
    Hch

    • Posted by Aryan Pathak 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Nanthan Jayaprakash 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Gaurav Seth 4 years, 3 months ago

    Given equations of a line is          ........ (i)

    0Thank You

    ANSWER

    • Posted by Raj Kumar 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Tannu Rao 4 years, 3 months ago

    If a function is continuous at a point then it means that limit exists at that point or LHL=RHL

    0Thank You

    ANSWER

    • Posted by Akash Yadav 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Thakkar Dhruv 4 years, 3 months ago

    1

    0Thank You

    ANSWER

    • Posted by Manoj Meena 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 5 answers

    Thakkar Dhruv 4 years, 3 months ago

    36

    0Thank You

    Pragati Rai 4 years, 3 months ago

    Hii

    0Thank You

    Rahul Moraingthem 4 years, 3 months ago

    7(9)

    0Thank You

    Gayatri Guntreddi 4 years, 3 months ago

    36

    0Thank You

    Manoj Meena 4 years, 3 months ago

    36

    0Thank You

    ANSWER

    • Posted by Isha Ahuja 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Abushema Qureshi 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Anjali Agarwal 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Arun Patel 4 years, 3 months ago

    Int of y DC Limto 0 and 1 = int cos x dx lim 0 and 1

    0Thank You

    ANSWER

    • Posted by Akshita Kashyap 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Mohit Mahra 4 years, 3 months ago

    Hi

    0Thank You

    ANSWER
    2.1

    • Posted by Aditya Chaudhary 4 years, 3 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
    ANSWER

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