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Find a matrix Xof order 3×2 such that 2A+3X=58 B , where A=8 0 and B = 2 -2 4 -2 3 6

Posted by Ashok Saw 5 years, 1 month ago

CBSE > Class 12 > Mathematics

0 answers

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How can i prepare maths for board exams

Posted by Gungun Arya Gupta 5 years, 1 month ago

CBSE > Class 12 > Mathematics

2 answers

Gungun Arya Gupta 5 years, 1 month ago

Thanks for help

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Gaurav Seth 5 years, 1 month 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.

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For what value of k, the matrix [K 2 3 4] is invertible

Posted by Roshnee Nayak 5 years, 1 month ago

CBSE > Class 12 > Mathematics

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Find the slope of the tangent to curve y= x³- 3x+2 at the point whose x-coordinate is 3

Posted by Aman Bedi 5 years, 1 month ago

CBSE > Class 12 > Mathematics

2 answers

Aman Bedi 5 years, 1 month ago

Ans is 24

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Udit Thardak 5 years, 1 month 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

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Hch

Posted by Aryan Pathak 5 years, 1 month ago

CBSE > Class 12 > Mathematics

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The equation of a line is 5x-3=15y+7=3-10z find the direction cosines of the line

Posted by Nanthan Jayaprakash 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Gaurav Seth 5 years, 1 month ago

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

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continuity means what

Posted by Raj Kumar 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Tannu Rao 5 years, 1 month ago

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

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HCF of 17,23,29

Posted by Akash Yadav 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Thakkar Dhruv 5 years, 1 month ago

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6×6

Posted by Manoj Meena 5 years, 1 month ago

CBSE > Class 12 > Mathematics

5 answers

Thakkar Dhruv 5 years, 1 month ago

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Pragati Rai 5 years, 1 month ago

Hii

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Rahul Moraingthem 5 years, 1 month ago

7(9)

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Gayatri Guntreddi 5 years, 1 month ago

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Manoj Meena 5 years, 1 month ago

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Show that the relation R={(a,b),a<_b} defined on real numbers Ris reflexive and transitive.

Posted by Isha Ahuja 5 years, 1 month ago

CBSE > Class 12 > Mathematics

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Sin²plus cos² =1

Posted by Abushema Qureshi 5 years, 1 month ago

CBSE > Class 12 > Mathematics

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area of the region bounded by the curve Y equal to cos x between X equals to zero and X equals to π is

Posted by Anjali Agarwal 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Arun Patel 5 years, 1 month ago

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

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Int dx/sinx + tanx

Posted by Akshita Kashyap 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Mohit Mahra 5 years, 1 month ago

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2.1

Posted by Aditya Chaudhary 5 years, 1 month ago

CBSE > Class 12 > Mathematics

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Integration of√cotx+√tanx

Posted by Vaibhav Panchal 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Gayatri Guntreddi 5 years, 1 month ago

Write tanx as sinx/cosx and cotx as cosx/sinx I= ✓((sin^2x/sinxcosx) + ✓(cos^2x/sinxcosx))dx I= (sinx+cosx dx)/✓(sinxcosx) sinx-cosx=t (sinx+cosx)dx=dt (sinx-cosx)^2=t^2 1–2sinxcosx=t^2 sinxcosx=(1-t^2)/2 Therefore, I=dt/✓((1-t^2)/2) I=(✓2)sin^-1(t) + C I=(✓2)sin^-1(sinx-cosx) + C

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Intrgrate X^2 SinX^3 dx

Posted by Astha Kumari 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Sushant Dwivedi 5 years, 1 month ago

Let x^3=t Differentiate above 3x^2=dt/dx x^2 dx=dt/3 -------------(1) From equation(1) Int. x^2 sin x^3 dx =Int. Sint dt/3 =1/3 Int. Sint dt =1/3 (- cos t) +c =-1/3 (cos t) +c. [ANS]

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If R is relation from non empty set A and B, then find relation between R and A x B

Posted by Zaid Ahmed 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Lolo Holo 5 years, 1 month ago

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Find theequation equation of the tangent to the curve y=√3x-2 which is parallel to the line 4x -2y + 5 = 0.

Posted by Suhani Sehgal 5 years, 1 month ago

CBSE > Class 12 > Mathematics

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Find the absolute maximum value and absolute minimum value of f(x) =cos^2 x+sin x

Posted by Devender Rajput 5 years, 1 month ago

CBSE > Class 12 > Mathematics

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Slope ka unit kya hota hai

Posted by Gurukul Classes 5 years, 1 month ago

CBSE > Class 12 > Mathematics

4 answers

Thakkar Dhruv 5 years, 1 month ago

Unitless Quantity

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Sandipan Samanta 5 years, 1 month ago

Unit of slope = unit of y-axis/ unit of x-axis

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Gaurav Srivastav Gs 5 years, 1 month ago

In Mathematics, slope =tanx And trigonometry value value has no unit so slope is may be unitless.

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Sachi Singh 5 years, 1 month ago

Meter/second..

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Sin2

Posted by Prince Ram 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Hiral Solanki 5 years ago

0.9

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Differntiate x^y=y^x

Posted by Nandana Shailesh 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Watch It 5 years, 1 month ago

Log y^x=logx^y Xlogy=ylogx Differntiating with respect to x X×(1/y)×(dy/DX) + logy.1=y.(1/x) + logx×(dy/dx) Dy/DX[x/y - log x]= y/x - log y dy\dx[(x-ylogx)/y]=(y-xlogy)/x Agae khud krlena...

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If y={x+(x^2+a^2)^1/2}^n

Posted by Zeeshan Khan 5 years, 1 month ago

CBSE > Class 12 > Mathematics