CBSE > Class 12 > Mathematics | CBSE Board | Homework Help

nope ncert is not sufficient... bro maths is different from other subject.... so, question can be asked from anywhere so I will prefer u to follow RD or Rs both are gud... nd do 10 years question + ncert.

3Thank You

Priya Dharshini ? 5 years, 9 months ago

No ncert is not enough according to me.. do last 10 years papers,oswall or rd then only it is possible to score 70 above out of 80 in maths

3Thank You

ANSWER

1/x + xlogx

Posted by Jas Kirat 5 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

How to carry out integration substitution can anyone tell me with some examples

Posted by Parveen Shahul 5 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

A step down transformer converts a voltage of 2000v in to 200 v in the transmission line.number of turns in the primary coil is 5000 efficiency of transformer is 80% and it's out put power is 8 kilo watt. Calculate the number of turns in secondary coil and it's in put power.

Posted by Anil Kumar 5 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Sir my problem is this that i am going to appear this year for cbse improvement exam but cbse have changed the pattern so how will give 20 marks internal assessment in all science and maths subjects i am in class 12

Posted by Dushyant Yadav 5 years, 9 months ago

CBSE > Class 12 > Mathematics

8 answers

Priya Dharshini ? 5 years, 9 months ago

?? great practice everyday for u.. for me in classes everyday 2hrs paper.. full day study only nothing else

1Thank You

Priya Dharshini ? 5 years, 9 months ago

When is ur half yearly ?

1Thank You

Priya Dharshini ? 5 years, 9 months ago

Thank you my friend who only types with me in english..??

1Thank You

Priya Dharshini ? 5 years, 9 months ago

Halfyearly is next week sorry..?

1Thank You

Priya Dharshini ? 5 years, 9 months ago

No problem.. just busy with studies.. halfyearly is coming next month. So much pressure on note book completion for stamping and all those stuffs which is of no use but we need to submitt.. that's why u couldnt find me here..

1Thank You

Akhil Kumar 5 years, 9 months ago

Do your best

0Thank You

Priya Dharshini ? 5 years, 9 months ago

According to this new pattern they will give u marks..

1Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 9 months ago

yes.. according to new norm they will give u 20 marks internal

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ANSWER

Difference equation

Posted by Mehru Nisha 5 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Anyone here who fill form of aakash anthe? If yes then tell me about aakash anthe. Please

Posted by Palak Tiwari 5 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Anuradha Chhonkar 5 years, 9 months ago

it is an institution or preperation of engineering and medical . In anthe a exam is held acccording to your syllabus for scholarship .there are 90 questions in question paper all are objective type .time is 2 hours

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ANSWER

Integration x square upon sin cube x into sin x plus alpha

Posted by Pankaj Kumar 5 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

prove that, /x+y x x 5x+4y 4x 2x 10x+8y 8x 3x/ = x3

Posted by Moon Bora 5 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Khuskaran Sidhu 5 years, 9 months ago

Take x as common from R2&R3 Then find value of det

0Thank You

ANSWER

What is new pattern of paper

Posted by Manish Singh 5 years, 9 months ago

CBSE > Class 12 > Mathematics

2 answers

Aadi Ahluwalia 5 years, 9 months ago

Maths na

0Thank You

Purva Bhardwaj 5 years, 9 months ago

For which one?

2Thank You

ANSWER

Simplify tan inverse (a+bx/b-ax)

Posted by Kalpana Jha 5 years, 9 months ago

CBSE > Class 12 > Mathematics

4 answers

Kalpana Jha 5 years, 8 months ago

No it is a question from inverse trigo

1Thank You

Khuskaran Sidhu 5 years, 9 months ago

a/b +x

1Thank You

Purva Bhardwaj 5 years, 9 months ago

Tan^-¹(a+bx/b-ax)=tan^-¹{(a/b + x)/(1-ax/b) Now use the identity of tan^-¹x+tan^-¹y .....you'll get a simplified value

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Purva Bhardwaj 5 years, 9 months ago

Don't we have to differentiate it?

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ANSWER

Is there any difference between the formulae of tan (x+y) and tanx+tany ?

Posted by Suma Byadagi 5 years, 9 months ago

CBSE > Class 12 > Mathematics

3 answers

Khuskaran Sidhu 5 years, 9 months ago

Yah ❗❕❗

0Thank You

Sajid Ali 5 years, 9 months ago

Yes,tan(x+y) and tanx+tany both are different.

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Purva Bhardwaj 5 years, 9 months ago

Tanx+ tany Put tanx=sinx/cosx (Sinx/cosx)+(siny/cosy) =(sinxcosy+sinycosx)/cosx.cosy =sin(x+y)/cosx.cosy Tan(x+y)=(tanx+tany)/1-tanx.tany Got the difference?

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ANSWER

Write the points of non differentiability of f(x)= |log|x||

Posted by Kalpana Jha 5 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Dev Yadav 5 years, 9 months ago

At x = 0 and at x = 1 Since at both place there is zero inside log and we know when inside log is 0 function is discontinuous If satisfied then please like

2Thank You

ANSWER

Show that f(x)= 2x-|x| is continuous at x=0

Posted by Kalpana Jha 5 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Sia ? 5 years, 9 months ago

Let f(x) = 2x − $|x|$
We have f(x)=2x - $|x|$
$\Rightarrow f(x)=\left\{\begin{array}{ll}{2 x-(-x)} & {\text { if } x<0} \\ {2 x-(x)} & {\text { if } x>0}\end{array}\right.$
Continuity at x=0
We have LHL as
$\lim _{x \rightarrow 0^{-}} f(x)=\lim _{x \rightarrow 0^{-}} 2 x+x$
$\Rightarrow$ 0

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Find the approximately value of f(5.001), where f(x) =x²-7x²+15.

Posted by Pavan Dubey 5 years, 9 months ago

CBSE > Class 12 > Mathematics

2 answers

Christine Phoebe 5 years, 9 months ago

Let x=5 then x+d x =5.001 dx=0.001 y=x^2 - 7x^2 + 15 = - 6x^2 +15 Differentiating dy= (- 12x+0) dx dy= - 12 × 0.001 = - 0.012 Now f(5)= -6(5×5)+15= - 135 Answer would be f(5)+ dy Which is - 135.012

0Thank You

Khuskaran Sidhu 5 years, 9 months ago

Put x=5.001

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ANSWER

Your last yrs question paper is wrong set -1.I have original

Posted by Parveen N Poswal 5 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Write the range of y=cos inverse of x

Posted by Revati Mali 5 years, 9 months ago

CBSE > Class 12 > Mathematics

2 answers

Sajid Ali 5 years, 9 months ago

[0,Π]

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Purva Bhardwaj 5 years, 9 months ago

[0 , π]

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ANSWER

If x sin(a+y) + sina cos(a+y)=0 Prove that dy/dx= sin^2 (a+y)/ sin a

Posted by Kalpana Jha 5 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

atan attendance is equal to b cos 2 theta + b sin theta is equal to what

Posted by Anushka Gawas 5 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

What are the main chapters of maths !!

Posted by Spade Udit754 5 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Purva Bhardwaj 5 years, 9 months ago

Derivatives and intergeneration

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ANSWER

2x+2

Posted by Bittu Kumar Sahu 5 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Posted by Bittu Kumar Sahu 5 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Mittal Shivam 5 years, 9 months ago

y=2* dy/dx=2*.loge

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ANSWER

Integrate 1/x+4-x square dx with limit 0to2

Posted by Simran Sandhu 5 years, 9 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Integrate the function of cos(cube)x.epower logsinx

Posted by Ankit Shareen 5 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Purva Bhardwaj 5 years, 9 months ago

(-sin³x.cosx)/3

2Thank You

ANSWER

Integration sec x/log (sec x+tan x) dx

Posted by Harman Sama 5 years, 9 months ago

CBSE > Class 12 > Mathematics

2 answers

Harman Sama 5 years, 9 months ago

Ye modern ka hai

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Pragati Saini 5 years, 9 months ago

Yrrr ye dinesh ka question hai agar uska hai toh tum uski solutionare lai lo ese hum kaha se copy karke bheje tume answers photo toh send hoti nhi yaha sirf chat hi ho skti hai

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Integration of 1-cosx/1+cosx

Posted by Abhijit Ranjan 5 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Manika Gupta 5 years, 9 months ago

1-cosx = 2sin²x/2 and 1+cosx = 2cos²x/2 now intergrate simply

3Thank You

ANSWER

How to find anti - derivatives

Posted by Riya Kumari 5 years, 9 months ago

CBSE > Class 12 > Mathematics

1 answers

Sia ? 5 years, 9 months ago

You can use reverse rules to find antiderivatives. The easiest antiderivative rules are the ones that are the reverse of derivative rules you already know. These are automatic, one-step antiderivatives with the exception of the reverse power rule, which is only slightly harder.
You know that the derivative of sin x is cos x, so reversing that tells you that an antiderivative of cos x is sin x.

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Square root cotx

Posted by Jai Bhole Baba Jai Bhole Baba 5 years, 9 months ago

CBSE > Class 12 > Mathematics