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

Let A [a_ij] be a skew symmetric matrix.
so,
a_ij =-a_ji for all i,j
⇒a_ii -a_ii for all values of i
⇒2a_ii =0
⇒a_ii =0 for all values of i
⇒a₁₁ = a₂₂ = a₃₃ =..... a_nn =0

1Thank You

ANSWER

Integrate the following: cosx—sinx÷(8—sinx)½

Posted by Preeti Rai 5 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Kumar Vishal Behera 6 years, 6 months ago

Hey u r so fast i have just completed half of inverse trigo

0Thank You

ANSWER

Is (a, b) * (c,d) = (c, d) *(a, b) Where a, b, c, d belongs to set of natural number?

Posted by Vir Rajput 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

If for a matrix A , A^2 + I =O where I is the identity matrix , then A equals...... .

Posted by Anjali Jindal 6 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Nishu Sahu 6 years, 6 months ago

A=[-1/2. 0 0. -1/2]

1Thank You

ANSWER

The matrix X in the equation AX=B , such that A=[1 3 -r1, 0 1 - r2] and B= [ 1 -1 - r1 , 0 1 -r2] is given by

Posted by Anjali Jindal 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Integral of x power n minus one upon x minus 1 DX

Posted by Ajay Rungta 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Guys please suggest which reference books is best for maths

Posted by Mukul Rao 6 years, 6 months ago

CBSE > Class 12 > Mathematics

5 answers

Dolly ?️ 6 years, 6 months ago

NCERT EXAMPLER

1Thank You

Hritik Kumar 6 years, 6 months ago

According to me rd is the best

2Thank You

Anjali Jindal 6 years, 6 months ago

Arihant is the best book, RD sharma, previous year question book......... Which u like..... Respect to whom u r preparing.????

2Thank You

Aman Kumar 6 years, 6 months ago

Rd sharma, RS agarwal...anyone...u take...they r good

2Thank You

Priya Dharshini ? 6 years, 6 months ago

Rs agarwal,mtg,oswal papers....

3Thank You

ANSWER

Can we use column to find out inverse of matrices and when I used column why my answer is not matches with ncert solution

Posted by Sweta Sweta 6 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Nishu Sahu 6 years, 6 months ago

Yes we can use column

1Thank You

ANSWER

Find the number of one one function from a finite set A to A where,n(A)=p

Posted by Rocky Nayak 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

(tan^2(x)+2tan(x)+3tan^2(x)+1)/tan(x)

Posted by Khushi Shah 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

if A-[sin^-1 (xpi) tan^-1x/pi .......... find A -B

Posted by Anuja Anuja 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Differentiate logcosx^2

Posted by Abhiraj Singh 6 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Puja Saravana Kumar 6 years, 6 months ago

-2cosx sinx/cosx^2

0Thank You

ANSWER

Cos inverse cos 13 by 6

Posted by Anurag Jaiswal 6 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Yakshi Baliyan 6 years, 6 months ago

Cos-1 and cos will be cancelled out...and the final answer will remain 13/6

2Thank You

ANSWER

Sample papers of maths for2019-20 class12

Posted by Jaspreet Malhi 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Differenciate with respect to x Sin inverse in bracket 1upon root 1+x^2

Posted by Muktinath Pandey 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

When log y =1 then what is the valve of y ?

Posted by Sahil Lohchab 6 years, 6 months ago

CBSE > Class 12 > Mathematics

2 answers

Amulya Srivastava 6 years, 6 months ago

I have put x instead of y

0Thank You

Amulya Srivastava 6 years, 6 months ago

Answer is 10 Using formula y=log x base b then b^y=x Let y=1 b=10 x=10 1=log 10 base 10 then 10^1=10 (In base there will be always 10)

0Thank You

ANSWER

X=tan(1/alogy) show that (1+x^2)d^y/dx^2+(2x-a)dy/dx=0

Posted by Md Khan Khan 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Relation R1, R2 ,R3, and R4, are defined on a set A=(a, b, c) .. If R2=(a, a) then which relation it satidfied

Posted by Ashutosh Chaturvedi. 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Evaluate [1!2!3! 2!3!4! Under matrix 3!4!5!]

Posted by Dolly ?️ 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

a,b,c are in ap b,c,d are in gp ,a-d>0

Posted by Rudra Patel 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

2+2/4

Posted by Deepansi Rohaj Rohaj 4 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Sia ? 4 years, 6 months ago

2.5

0Thank You

ANSWER

Find the principal value of -√5cos(-√3/2)

Posted by Ramvikash Jaiswal 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

In mathematics board exam for 12th in 2019-20 session, the first 20, 1 marks questions are one word or MCQ?

Posted by Amit Kumar 6 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Adarsh Deep Gupta 6 years, 6 months ago

Mcq

0Thank You

ANSWER

When will they issue 2019-20 sample paper of all subjects

Posted by Shreya Gautam Gautam 6 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Himanshu Nagpal 6 years, 6 months ago

I dont know

0Thank You

ANSWER

Weightage of each chapter

Posted by Shriya Bhat 6 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Muskan Chauhan 6 years, 6 months ago

there will be no overall weightage of each ch becoz each ch contain equal importance in 2019 20

0Thank You

ANSWER

Derivative of x by delta mehod

Posted by Amanpreet Singh 6 years, 6 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

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