NCERT 2022 | आव्यूह - L13 | Matrix | Class 12 गणित | Hindi Medium | Jitendra Sir | 11 AM |

Class 11 के बाद क्या ? Class 12 Hindi Medium की पढ़ाई साल के शुरू से कैसे करें ?

Class 12 Maths (Hindi) | Chapter 3 आव्यूह | Important Questions | Quick Revision

Let A = [ a_(ij) ] be a square matrix of order 3xx 3 and |A|= -7. Find the value of a_(11) A_(11) +a_(12) A_(12) + a_(13) A_(13) where A_(ij) is the cofactor of element a_(ij)

In a class, 18 students took Physics, 23 students took Chemistry and 24 students took Mathematics of these 13 took both Chemistry and Mathematics, 12 took both Physics and Chemistry and 11 took both Physics and Mathematics. If 6 students offered all the three subjects, find: (i) The total number of students.

Let A=[a_(ij)]_(3xx3) be a matrix such that A.A^(T)=4I and a_(ij)+2c_(ij)=0 where c_(ij) is the cofactor of a_(ij) AAi & j , I is the unit matrix of order 3 and A^(T) is the transpose of the matrix A If |(a_(11)+4,a_(12), a_(3)),(a_(21),a_(22)+4,a_(24)),(a_(31),a_(32),a_(33)+4)|+5lamda|(a_(11)+1,a_(12),a_(13)),(a_(21),a_(22)+1,a_(23)),(a_(31),a_(32),a_(33)+1)|=0 then lamda=a/b where a and b are coprime positive integers then the value of a+b is______

12 PM Special Class | Class 11 - STRUCTURE OF ATOM || BOHR MODEL By Yakshu Ma'am

Let A=[(x,2,-3),(-1,3,-2),(2,-1,1)] be a matrix and |adj(adjA)|=(12)^(4) , then the sum of all the values of x is equal to

Let A=[a_(ij)]_(3xx3) be a matrix such that A A^T=4T and a_(ij)+2c_(ij)=0 , where c_(ij) is the cofactor of a_(ij) and I is the unit matrix of order 3 . |(a_11 +4 , a_12 , a_13),(a_21 , a_(22)+4 ,a_23),(a_31,a_32,a_(33)+4)|+5lambda|(a_(11)+1 , a_12,a_13),(a_21,a_(22)+1, a_23),(a_31, a_32 , a_(33)+1)|=0 then the value of 10lambda is ____

Let A=([a_(i j)])_(3xx3) be a matrix such that AA^T=4Ia n da_(i j)+2c_(i j)=0,w h e r ec_(i j) is the cofactor of a_(i j)a n dI is the unit matrix of order 3. |a_(11)+4a_(12)a_(13)a_(21)a_(22)+4a_(23)a_(31)a_(32)a_(33)+4|+5lambda|a_(11)+1a_(12)a_(13)a_(21)a_(22)+1a_(23)a_(31)a_(32)a_(33)+1|=0 then the value of 10lambda is _______.