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

Ashish Sir or Pathshala both r best teachers on you tube bro see their videos and judge may it is good for u . because I also follow them . ALL THE BEST G

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1+2+3+4+----------+n=?

Posted by Prateek Kumar 5 years, 2 months ago

CBSE > Class 12 > Mathematics

5 answers

Usha Yadav 5 years, 2 months ago

This is an AP Form We are to calculate the sum of number up to N- Terms Using for.formula 2a+ (n-1)d Here a=1 d = 1 So, 2+(n-1) If sum is Given then equal To it...... You will get the Answer...Definitely.... Hope it would help you .........

2Thank You

Mohit Jaiswal 5 years, 2 months ago

Since the series is in AP with a=1 and d=1. S= n[2a+(n-1)d]/2 = n(2+n-1)/2 =n(n+1)/2

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Iqbal Singh 5 years, 2 months ago

n(n+1)/2

1Thank You

Suryakant Swain 5 years, 2 months ago

n(n+1)/2

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Kunal Attri 5 years, 2 months ago

n(n+1) /2

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ANSWER

When 0.16 is written as a fraction in its simplest form, the sum of the numerator and the denominator is

Posted by Raja Yadav 5 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Mayank Chouhan 5 years, 2 months ago

0Thank You

Aditya Yadav 5 years, 2 months ago

1Thank You

ANSWER

Sinx3

Posted by Ashwin Jaiswal 5 years, 2 months ago

CBSE > Class 12 > Mathematics

3 answers

Riya Sen 5 years, 2 months ago

3x²cosx³

0Thank You

Tanisha Yadav 5 years, 2 months ago

3x^2cosx^3

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Usha Yadav 5 years, 2 months ago

Differenction Cos x^3 . 3x^2

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ANSWER

all the formulas of chapters

Posted by Sonam Chanyal 5 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Mishti ???? 5 years, 2 months ago

Write by u 'r own dear...

2Thank You

Iqbal Singh 5 years, 2 months ago

chapter konsa

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ANSWER

Make a word problem from matrices or determinant

Posted by Nidhi Sahu 5 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Let A = [1 2 1 2 3 1 1 1 5] . Verify that (i) [adj A]^–1 = adj (A–1) (ii) (A^–1)^ –1 = A Please tell..... in this matrix 2 is -ve or +ve sign by seeing in your maths book (ncert) ch-4 (misc.ex. 8th ques)

Posted by Priyanka Birat 5 years, 2 months ago

CBSE > Class 12 > Mathematics

4 answers

Mishti ???? 5 years, 2 months ago

It's okk ... U'R welcome dear..??

2Thank You

Priyanka Birat 5 years, 2 months ago

Thank you.... Misti

1Thank You

Mishti ???? 5 years, 2 months ago

Both 2 is negative dear....

3Thank You

Priyanka Birat 5 years, 2 months ago

Because after solve this question with +ve 2 the answer is wrong ....so plz tell Is 2 will be +ve or -ve sign?

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Row1st (6 and 1) Row2nd(2 and 4) Find the inverse of matrix using elementary method.

Posted by Om Om 5 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Shraddha ✨✰✰ 5 years, 2 months ago

Elementary method is not in syllabus this year. OK ?

1Thank You

Iqbal Singh 5 years, 2 months ago

smj nhi aa rha achey sey likho na yaar ?

1Thank You

ANSWER

Find the inverse of matrix using elementary method [6 1] [2 4] 2×2 ORDER PAIR

Posted by Om Om 5 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Shraddha ✨✰✰ 5 years, 2 months ago

Elementary method is not in syllabus this year .

1Thank You

ANSWER

FX is equal to 1 - x if x is less than 1 and under bracket 1 - x 2 - x if one is less than equal to X X is less than equal to 2 and 3 - x if x is greater than 2

Posted by Md Furkan 5 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

f(x)=1-x,x<1

Posted by Md Furkan 5 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Integration of (underoot sin2x).sinx from 0 to pi/2...

Posted by Jahnvi Bansal 5 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Atul Sharma 5 years, 2 months ago

Please tell me increasing and decreasing order of function(application of derivatives)

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ANSWER

Prove skew symmetric matrix

Posted by Simran Badhwar 5 years, 2 months ago

CBSE > Class 12 > Mathematics

3 answers

Usha Yadav 5 years, 2 months ago

Sorry ,that answer was Wrong Answer is 1/2(A+A') +1/2(A-A'). Use this for skew symmetric Matrix......... A=-A'. Also...........Should be.......this one....

0Thank You

Usha Yadav 5 years, 2 months ago

Skew Symmetric Matrix Is that..... Whoes Determinet is not a ZERO...

3Thank You

Shraddha ✨ 5 years, 2 months ago

A matrix A is a skew symmetric matrix if and only if A = A^-T

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ANSWER

All formulas of trigonometry class 12th

Posted by Kl? ?? 5 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Iqbal Singh 5 years, 2 months ago

On google by search all formulas of trigonometry ofclass12 .G

1Thank You

Iqbal Singh 5 years, 2 months ago

If u want all formulas see the site www.vedantu.com

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ANSWER

If a, b, c, are in A.P, then the determinant [x+2 x+3 x+2a x+3 x+4 x+2b x+4 x+5 x+2c] is (A) 0 (B) 1 (C) x (D) 2x can anyone tell me..... 'Can we solve this question only by elementary method or there is another method?'

Posted by Priyanka Birat 5 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Iqbal Singh 5 years, 2 months ago

You can solve it by elementary method and frhahklsteno method

0Thank You

Divyanshu Yadav 5 years, 2 months ago

Only elementary

2Thank You

ANSWER

If x = a[ø + sin(ø) ] & y = (1-cosø) then find the (d²x)/(dy²) at ø = π/2 is ?.......??

Posted by Shraddha ✨ 5 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Shraddha ✨✰✰ 5 years, 2 months ago

Ans.???

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If x=a(t)² , y=2at then (d²x)/(dy)²

Posted by Shraddha ✨ 5 years, 2 months ago

CBSE > Class 12 > Mathematics

5 answers

Ayush Vishwakarma?? 5 years, 2 months ago

0 (zero)

1Thank You

Iqbal Singh 5 years, 2 months ago

If u mean x=a(t)*2 , y=2at then answer is 1 . If u mean x=at*2, y=2at then answer is a . Hope it help u please reply me after check this answer .

2Thank You

Shraddha ✨ 5 years, 2 months ago

Aapka ans 0 kaese aaya ? Plz bataenge.

1Thank You

Rajneesh Kaurav 5 years, 2 months ago

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Shraddha ✨ 5 years, 2 months ago

Sorry (d²x)/(dy²) hai

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ANSWER

tan inverse xy/yz + tan inverseyr/zx + tan inverse zr/xy

Posted by Mansi Hial 5 years, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Definite integral of log sinx from limit pie to 0

Posted by Ayush Singh 5 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Chirag Khatri 5 years, 2 months ago

-1

0Thank You

ANSWER

Friends who is the best teacher of math in YouTube?

Posted by Suryakant Swain 5 years, 2 months ago

CBSE > Class 12 > Mathematics

5 answers

Iqbal Singh 5 years, 2 months ago

Priya thappar

1Thank You

Shraddha ✨ 5 years, 2 months ago

Neha agraval mam ,vedantu .

1Thank You

Anushka Kakkar 5 years, 2 months ago

Priya thapar

1Thank You

Mishti ???? 5 years, 2 months ago

Use vedantu or unacadmey on u tube dear....

1Thank You

Anshuman Mishra 5 years, 2 months ago

For boards chanel cbseclass videos

1Thank You

ANSWER

Find ?? ?- ; if x = a cos2 θ, y = b sin2 θ

Posted by Harinand K 5 years, 2 months ago

CBSE > Class 12 > Mathematics

3 answers

Riya Sen 5 years, 2 months ago

-b cot 2 theeta / a

0Thank You

Iqbal Singh 5 years, 2 months ago

I find dx/dy = -2asin2 theeta /2bcos2theeta

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Iqbal Singh 5 years, 2 months ago

Kya find krna hai g

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ANSWER

Find the point on the curve y=x ki power 3-3x square-4x at which the tangent lines are parallel to the line 4x+y-3=0

Posted by ... Mmm ...... 5 years, 2 months ago

CBSE > Class 12 > Mathematics

2 answers

Anshuman Mishra 5 years, 2 months ago

Point is (2 ,-12)

1Thank You

Anshuman Mishra 5 years, 2 months ago

Is the equation of curve Y= x^(3-3x^2) -4x

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ANSWER

What is derivative of log5x

Posted by Yukti Kalra 5 years, 2 months ago

CBSE > Class 12 > Mathematics

3 answers

Ayush Vishwakarma?? 5 years, 2 months ago

1/x or x^-1

1Thank You

Iqbal Singh 5 years, 2 months ago

1/x

2Thank You

Tannu Rao 5 years, 2 months ago

5/5x = 1/x

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ANSWER

Integral of 1/1-x dx

Posted by Iqbal Singh 5 years, 2 months ago

CBSE > Class 12 > Mathematics

5 answers

Iqbal Singh 5 years, 2 months ago

Thanks

1Thank You

Tannu Rao 5 years, 2 months ago

Sorry vo galat likh diya..1/x ka integral log x hoga

1Thank You

Tannu Rao 5 years, 2 months ago

1/x ka derrivative Logx hota h aur yaha x ki jagah ek linear h to hum yahi formula use kr sakte h bs us linear expression(1-x) k derrivative se divide krna padega

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Iqbal Singh 5 years, 2 months ago

But how ?which formula u use. Btana please

0Thank You

Tannu Rao 5 years, 2 months ago

-Log(1-x)

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Two parallel metal plates having charges +Q and -Q face each other at a distance between them. If the plates are now dipped in kerosene oil tank,the electric field between the plates will

Posted by Saurabh Khatri 5 years, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Tannu Rao 5 years, 2 months ago

Let the dielectric constant of kerosene oil be k. Now, on dipping them in kerosene oil capacitance C changes to kC while Q remains constant. Hence by Q=CV, we can say that V changes to V/k. Also, E=V/d . Therefore electric field changes from E to E/k

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ANSWER

(2x + 8) (4x+8)

Posted by Anshu Kumari 5 years, 2 months ago

CBSE > Class 12 > Mathematics