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Integration of cot ^-1(1-x+x^2) Guys please it's emergency .........whoever solves it can assure oneself that ur gonna do well tommorow ?

Posted by Tashi Ongmu Lepcha 6 years, 7 months ago

CBSE > Class 12 > Mathematics

2 answers

Preeti Takhar 6 years, 7 months ago

Convert it in the form of tan-1and then add and substract x and in the denominator take x common...it will then become tan-1(1+x)- tan-1x

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Mona Singh 6 years, 7 months ago

You just simply apply by parts.. keeping cot-1 wala function as constant.. After that.. In the second part of the integration.. First divide the numerator by the denominator.. And then solve simply.. I'm sure you'll do it now.. If you still have problem.. I'll write the steps.. Ask me again.. Best of luck for tomorrow.. Stay calm.. You too will have a great exam tomorrow.. Best wishes..

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Integration of 1/(sin⁴x+cos⁴x+sin²x.cos²x)

Posted by Yash Harjani 6 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Mona Singh 6 years, 7 months ago

Whenever the question has even power of cos or sin.. Divide numerator and denominator by that even power of sec.. In this question we will divide by sec^4x.. And then put tanx =z.. The final answer will be.. 1/√3 (tan-1(tan^x -1/√3 tanx) ) +C..

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Solve the equation sin[2cos-1{cot(2tan-1x)}]=0

Posted by Jay Rajput 6 years, 7 months ago

CBSE > Class 12 > Mathematics

2 answers

Mona Singh 6 years, 7 months ago

x=+1 or -1 since at last by solving we get (1-x^2) =0

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Suhani Rana? 6 years, 7 months ago

2Tan^-1x ka formulae laga do i.e tan^-12x/1+x^2 than change tan^-1 into cot^-1 uske bat cot^-1 cancel ho jayega cot se phir 2cos^-1x ka formula lagega sin ki term me then sin^-1 also get cancelled with sin and you got equation in term of x and then simply solve for x

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In 3D & planes, is finding the image an important topic??

Posted by Nivetha Vijayakumar 6 years, 7 months ago

CBSE > Class 12 > Mathematics

4 answers

Nawal Yadav 6 years, 7 months ago

It is important a 2 marker question may be asked from it

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Nivetha Vijayakumar 6 years, 7 months ago

Ok, but what abt the errors & approximations topic in applications of derivatives? Is it important?

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Nivetha Vijayakumar 6 years, 7 months ago

Thank you.

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Nishu Sharma 6 years, 7 months ago

Yes, very important...

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ANSWER

Integration exerscie solutions

Posted by Anchana Js 6 years, 7 months ago

CBSE > Class 12 > Mathematics

0 answers

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Show that all the diagonal elements of a skew symmetric matrix r 0

Posted by Harish Kumar 6 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Nancy Dahiya 6 years, 7 months ago

Diagnal elements of a matrix r aii as in diag.elements i=j ln dig. Ele. Of skew symn. Matrix. aii= --aii. # 2aii=0. this give ; aii=0. Hence diag.elements of skew symm.[ ] are zero

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Find dy/dx if (x^2 + y^2)^2=xy

Posted by Shantanu Sable 6 years, 7 months ago

CBSE > Class 12 > Mathematics

3 answers

Chhavi Sachdeva 6 years, 7 months ago

Just simply differentiate both sides wrt x and put dy/dx one side and all the others on the other side.

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Nivetha Vijayakumar 6 years, 7 months ago

If possible u can simplify it further.

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Nivetha Vijayakumar 6 years, 7 months ago

dy/dx = (y-4x^3-4xy^2) / (4yx^2+4y^3-x)

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Show that the surface area of a closed cuboid with square base and given volumeis minimum,when It os cube

Posted by Brajesh Kumar 6 years, 7 months ago

CBSE > Class 12 > Mathematics

0 answers

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If A and B are invertible matrix of order 3 determinant of a = 22 and determinant of a b inverse equals to minus 1 by 6 Find determinant of B

Posted by Sarif Saifi 6 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Chhavi Sachdeva 6 years, 7 months ago

|(AB)^-1|=|B|^-1 |A|^-1 and then as we know that |A^-1|=1/|A| and then using this relation you can simplify it.

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Ten cards are drawn

Posted by Naveen Malik 6 years, 7 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Tomorrow is my maths ppr ....which chapter i should read at least to get 40 marks

Posted by Anju Chamyal 6 years, 7 months ago

CBSE > Class 12 > Mathematics

3 answers

Christin Mathew 6 years, 7 months ago

Aye don't say like that. You could score better than that

1Thank You

Manika Gupta 6 years, 7 months ago

Do miscellaneos of all chapters Focus on relations , straight line and limits

1Thank You

Simranjeet Kaur 6 years, 7 months ago

You should do all 5 chapters of calculus i.e. ch 5-9 in your class 12 mathematics notebook and its weightage is 44 marks.hope this will help you .

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Tan^-1(x-1/x+1)+tan^-1(2x-1/2x+1)=tan^-1(23/36)

Posted by Kaku Singhal 6 years, 7 months ago

CBSE > Class 12 > Mathematics

2 answers

Nivetha Vijayakumar 6 years, 7 months ago

I think that we have to find the value of ' x ' coz the RHS only contain the constant values. If my guess was correct, then x = 1 or x = -1/2.

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Nivetha Vijayakumar 6 years, 7 months ago

Should we find the value of 'x' here?

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Could you please tell me an investigation project for chemistry class 12

Posted by Christin Mathew 6 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Chhavi Sachdeva 6 years, 7 months ago

Adulteration of food, Rusting Of Iron.

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Tomorrow my maths exam can done only previous year paper for passing marks

Posted by Lovejit Singh 6 years, 7 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Integrate (x²+sin²x)sec²x/1+x²

Posted by Akash Bhati 6 years, 7 months ago

CBSE > Class 12 > Mathematics

2 answers

Nawal Yadav 6 years, 7 months ago

Add and subtract 1 from x square + sin square then change 1-sin square into cos square then separetly divide by 1+ x square

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Chhavi Sachdeva 6 years, 7 months ago

Write sin^2 x as 1-cos^2x and then multiply it and simplify it you will get the answer.

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Find the general solution of the differential equation x(x^2-1) dy/dx = 1

Posted by Sahana Sankaranarayanan 6 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Chhavi Sachdeva 6 years, 7 months ago

Firstly transfer the whole term which is with DY by DX to the other side that is in the denominator and then by using variable separation solve the question.

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Proof of this theorem. Any square matrix can be expressed as the sum of a symmetric and skew symmetric matrix.

Posted by Parul Kohli 6 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Keshav Malpani 6 years, 7 months ago

You may do it by considering two matrix

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शो दैट द फंक्शन ऑफ ऑफ एक्स इक्वल टू एक्स माइनस वन फुल मोड प्लस एक्स प्लस वन होल मोटरोला एक्स प्लस टू इज नॉट डिफरेंट आई विल एट द प्वाइंट सिक्स इक्वल टू वन एंड एक्स इज इक्वल टू वन

Posted by Pran Dhetterwal 6 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Sahana Sankaranarayanan 6 years, 7 months ago

Can you pls repost it in English?

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Y = ( secx secx )

Posted by Neelam Kumari 6 years, 7 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Shortest distances

Posted by Prakash G 6 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Chhavi Sachdeva 6 years, 7 months ago

It is the distance between 2 skew lines.

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How to find sin theeta in vectors?? Is it by cross product??

Posted by Vrinda Murarka 6 years, 7 months ago

CBSE > Class 12 > Mathematics

2 answers

Prateek Seth 6 years, 7 months ago

Yes... sin theta equals to magnitude of vector a cross vector B divided by magnitude of vector a and magnitude of vector b

2Thank You

Prasanna Sriram 6 years, 7 months ago

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ANSWER

a+b+c=0 |a|=3 |b|=5 |c|=7 find the angel between a & b

Posted by Abhishek Chhachhiya 6 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Aditya Singh 6 years, 7 months ago

a+b=-c This means |vector a+vector b|=|c| but direction is oppsite. Solving we get, angle=60°

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how to get goof. marks when tomorrow is exam and i have not prepared anything

Posted by Suraj Bind 6 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Pranav Thakur 6 years, 7 months ago

Try to complete the important questions of ncert

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How to score 100 in maths??

Posted by Suraj Smith 6 years, 7 months ago

CBSE > Class 12 > Mathematics

2 answers

Pranav Thakur 6 years, 7 months ago

Solve:- Previous year+ncert

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Sahana Sankaranarayanan 6 years, 7 months ago

Go through ncert book fully and try solving last 10 yrs paper

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Topics that never came easy in board paper are expected to come tough tommorow? Can any knowledgeable person tell me?

Posted by Priyanshi Dobhal 6 years, 7 months ago

CBSE > Class 12 > Mathematics

2 answers

Priyanshi Dobhal 6 years, 7 months ago

Which topics are they?

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Kartar Singh 6 years, 7 months ago

yes like always

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What are the important questions from the entire book

Posted by Digvijay Singh Solanki 6 years, 7 months ago

CBSE > Class 12 > Mathematics

2 answers

Digvijay Singh Solanki 6 years, 7 months ago

Do. Your own work

1Thank You

Kartar Singh 6 years, 7 months ago

you are not a machine so you can do all questions in single day ...lol

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ANSWER

Find the point of intersection of the line vec r = ( j cap - k cap) + s ( 2i cap - j cap - k cap) and XZ plane

Posted by Rakesh Gp 6 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Dinesh D 6 years, 7 months ago

Write the line in cartesian form. Equate with lambda. Find values of x,y and z w.r.t lambda. Since it intersects with xz plane, put y=0 and calculate lambda. Put lambdas value to get x and z. You got your point

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Sec30=

Posted by Supreet Jain 6 years, 7 months ago

CBSE > Class 12 > Mathematics