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Determinants m multiply kaise hoti hai please take a one example in adjoiny inverse of matrics

Posted by Paras Chauhan 4 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Paras Chauhan 4 years, 9 months ago

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19 ex-7.2

Posted by Shubham Ray 4 years, 11 months ago

CBSE > Class 12 > Mathematics

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Inverse of f(x)=10^x+10^-x/10^x+10^-x

Posted by Bansita Panda 4 years, 11 months ago

CBSE > Class 12 > Mathematics

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Ch 1 ex 1.1

Posted by Gaurav Panwar 4 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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Find inverse of matrix by elementary row transformation [1 -1 2 0 2 3 3 -2 4]

Posted by Diksha Garg 4 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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(i) If A is a square matrix of order 3 such that |?| = 2, then the value of |???(????)|is

Posted by Kratika Dawar 4 years, 11 months ago

CBSE > Class 12 > Mathematics

2 answers

Rajan Kumar Pasi 4 years, 11 months ago

$\huge {{\text{Sol: } | {adj\ (\ adj A\ )}| } = {(|A|^{n-1}})^2}\\ \huge {=>{ | {adj\ (\ adj A\ )}| } = {(2^{3-1}})^2}\\ \huge {=>{ | {adj\ (\ adj A\ )}| } = {(2^{2}})^2}\\ \huge {=>{ | {adj\ (\ adj A\ )}| } = (4)^2}\\ \huge {=>{ | {adj\ (\ adj A\ )}| } = \boxed{16} \leftarrow Ans}\\ :-)$

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Diksha Garg 4 years, 11 months ago

|adj.(adj.A)|=|A|^(n-1) ^2 It means |A|^(3-1) ^2 =2^4=16

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Can anyone please elborate example 47 of chapter 1 relation and function? My query is when we add (2,1) or(3,2) to smallest relation R1 it becomes symmetric also, (as (1,2) and (2,3) is present in it) which is not the demand of the question.

Posted by Anuj Kaushik 4 years, 11 months ago

CBSE > Class 12 > Mathematics

2 answers

Anuj Kaushik 4 years, 11 months ago

Sir, if i don't getting it wrong we do not want show to symmetry here. If so, please elaborate the full answer.

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Rajan Kumar Pasi 4 years, 11 months ago

Here is the answer. For symmetricity, you have to include all the possible pairs which shows symmetry.
Only one pair does not make it symmetric.

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Definition of relation & functions

Posted by Inder Jit Heer 4 years, 11 months ago

CBSE > Class 12 > Mathematics

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Evaluate :- sin[π/2 -sin^-1 (-√3/2)]

Posted by Vinod Varma 4 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Jaspreet Singh 4 years, 11 months ago

Let sin-¹ [-√3/2] = ¤ ¤ = -π/3 A. T. Q = Sin[π/2 + π/3] = Sin [5π/6] = sin 150• = sin (90 + 60)• = sin 90 + cos 60 + cos 90 + sin 60 = 1×1/2. + 0 × √3/2 = 1/2 = ANWSER...........!!!!!!!

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K.C.sinha book solution

Posted by Ruby Roy 4 years, 11 months ago

CBSE > Class 12 > Mathematics

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Solve 4x-5y+16=0 and 2x+y-6=0 and also draw its graph

Posted by Ramkishor Saini 4 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Ramkishor Saini 4 years, 11 months ago

X=1,y=4

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Definite integration of sin x dx with limit 2pi to 0

Posted by Virat Tiwari 4 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Tannu Rao 4 years, 11 months ago

-cos(2π)-(-cos(0)) = -1-(-1) = 0

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Sin(1/2 cos inverse 4/5)

Posted by Manjari Tripathi 4 years, 11 months ago

CBSE > Class 12 > Mathematics

2 answers

Jaspreet Singh 4 years, 11 months ago

Let cos -¹ 4/5 = ¤ B/H = 4/5 = cos ¤ Sin ¤/2 = √1-cos ¤ / √2 = 1/√10

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Vinod Varma 4 years, 11 months ago

Let, cos inverse 4/5 = A where, A belongs to [0,π] So, cosA = 4/5 .............(1) We know, cos2A = 1 - 2sin^2A cosA = 1- 2sin^2 A/2 2sin^2 A/2 = 1 - cosA sin^2 A/2 = (1 - cosA)/2 Put cosA = 4/5 in equation (1) = (1-4/5)/2 = (5-4)/5/2 = 1/5 . 1/2 = 1/10 sin^A/2 = 1/10 sin A/2 = +1/√10 (sin A/2 is +ve and 0 <A<π/2) A/2 = sin inverse (1/√10) sin (1/2 .A) = sinA/2 sinA/2 = sin (sin inverse 1/√10) So, sin(sin inverse 1/√10) = 1/√10

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Let u=i+2j, v=-2i+j and w=4i+3j . Find scalars x and y such that xu+yv=w

Posted by Krishna Agarwal 4 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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Ex 7.4 class12

Posted by Aryan Sharma 4 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Pritika Yadav 4 years, 11 months ago

Question kaha par h

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Sir sinx + cosx = 0 how ??

Posted by Priyanka Bhakat 4 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Aman Shree 4 years, 11 months ago

1. Write cos x = sin(90-x). 2.Then, Use formula to expand Sin x + Sin(90-x) 3. We will get x= (nπ+3π/4)

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cos^-1(1/2)+2sin^-1(1/2)

Posted by Tgdh Ghhfd 4 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Rajman Chaudhary 4 years, 11 months ago

2π/3

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without expanding find the value of sin alpha cos alpha cos (alpha + sin theta cos theta cos theta + sin cos cos bracket gamma + delta

Posted by Jamuna Prasad 4 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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Is 12th maths easy

Posted by Ramakrishnan Balamurugan 4 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Josna Mary Thomas Thomas 4 years, 11 months ago

Yes, when compared to 11th

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Log 10

Posted by Srishti Wasti 4 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Diksha Garg 4 years, 11 months ago

Log10 is equal to 1

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Find the solution for log 324 base 3√2

Posted by Sulakshana Natuva 4 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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123-(324) +176

Posted by Disha Saroha 4 years, 11 months ago

CBSE > Class 12 > Mathematics

3 answers

Mandeep Kaur 4 years, 11 months ago

-25

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Diksha Garg 4 years, 11 months ago

Its answer is 123-324+176=123-148= -25

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Chaudhary Param Tomar 4 years, 11 months ago

Answer : -25

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1.Express the following matrix as the sum of a strimetsic and ` a skew - symmetric materise: ` A= -1 7 1 2 3 4 5 0 0 )

Posted by Sunil Dahiya 4 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Shreya Suman 4 years, 11 months ago

what is the order of matrix

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Prove that cos^-1 (a^2-x^2/a^2+x^2)= 2 tan^-1 (x/a)

Posted by Sonia Arora 4 years, 11 months ago

CBSE > Class 12 > Mathematics

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Sir what is the meaning of mathematics.....

Posted by Priyanka Bhakat 4 years ago

CBSE > Class 12 > Mathematics

1 answers

Sia ? 4 years ago

Mathematics, the science of structure, order, and relation that has evolved from elemental practices of counting, measuring, and describing the shapes of objects.

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domain of 2x

Posted by Vishal Yadav 4 years, 11 months ago

CBSE > Class 12 > Mathematics