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Amitesh Kumar
Subject: Maths
, asked on 29/4/18
Plz fast no6
Answer
1
Sudhanshu Singh
Subject: Maths
, asked on 28/4/18
Solve this
Please don't give any link...:\
$4.\mathrm{Using}\mathrm{elementary}\mathrm{row}\mathrm{operations},\mathrm{find}\mathrm{the}\mathrm{inverse}\mathrm{of}\mathrm{the}\mathrm{following}\mathrm{matrix}:\phantom{\rule{0ex}{0ex}}\mathrm{A}=\left[\begin{array}{ccc}2& -1& 3\\ -5& 3& 1\\ -3& 2& 3\end{array}\right]$
Answer
1
Sudhanshu Singh
Subject: Maths
, asked on 28/4/18
Solve this
Please don't give any link..
$\mathbf{19}\mathbf{.}\mathbf{}IfA=\left[\begin{array}{cc}3& 2\\ -1& 1\end{array}\right]andB=\left[\begin{array}{cc}-1& 0\\ 2& 5\\ 5& 4\end{array}\right],find\left(BA\right)\text{'}.$
Answer
1
Sudhanshu Singh
Subject: Maths
, asked on 28/4/18
Q. Find the integral value of x if
$\left[\begin{array}{ccc}x& 4& -1\end{array}\right]\left[\begin{array}{ccc}2& 1& -1\\ 1& 0& 0\\ 2& 2& 4\end{array}\right]\left[\begin{array}{ccc}x& 4& -1\end{array}\right]$
^{t}
= 0
Answer
1
Sudhanshu Singh
Subject: Maths
, asked on 27/4/18
Solve (i) and (ii) part of the question
Q.4. Find the inverse of the following matrices, if it exists, using elementary row operations :
(i)
$\left[\begin{array}{ccc}2& 0& -1\\ 5& 1& 0\\ 0& 1& 3\end{array}\right]$
(ii)
$\left[\begin{array}{ccc}1& 3& -2\\ -3& 0& -1\\ 2& 1& 0\end{array}\right]$
Answer
1
Apurva Inamdar
Subject: Maths
, asked on 25/4/18
10) The geometric and harmonic means of two numbers x
_{1}
and x
_{2}
are 18 and 16
$\frac{8}{13}$
respectively. The value of
$\left|{x}_{1}-{x}_{2}\right|is$
(a) 5
(b) 10
(c) 15
(d) 20
Answer
1
Aarishti Singh
Subject: Maths
, asked on 22/4/18
if A is 3?4 Matrix such that A'B and B'A are both defined than find order of B
Answer
1
Aarishti Singh
Subject: Maths
, asked on 22/4/18
Q 20
Answer
1
Shobhit De
Subject: Maths
, asked on 19/4/18
Please solve these two questions.
No links please.
(In the list for selecting the chapter, I am not getting binomial, so I am putting this question in the category of matrices. Sorry for inconvenience.)
Answer
1
Shreyans Singh
Subject: Maths
, asked on 18/4/18
Solve this :
$\mathit{Q}\mathbf{.}\mathbf{2}Byelementoryrowtransformation,findtheinverseof\phantom{\rule{0ex}{0ex}}A=\left[\begin{array}{ccc}3& -1& 2\\ -4& 0& 5\\ 1& 3& 2\end{array}\right]$
Answer
2
Shobhit De
Subject: Maths
, asked on 18/4/18
What type of equations are these? I have never seen such questions. Please explain the equation and solve it too.
No links please
Answer
2
Muhammad Arafath R Z
Subject: Maths
, asked on 18/4/18
$Matricesanddeterminantsmains2018\phantom{\rule{0ex}{0ex}}solveplease:\phantom{\rule{0ex}{0ex}}SupposeAisany3X3non-\mathrm{sin}gularmatrixand(A-31)(A-51)=O,whereI={I}_{3}andO={O}_{3}.\phantom{\rule{0ex}{0ex}}If\alpha A+\xdf{A}^{-1}=41then\alpha +\beta isequalto:\phantom{\rule{0ex}{0ex}}1.8\phantom{\rule{0ex}{0ex}}2.13\phantom{\rule{0ex}{0ex}}3.12\phantom{\rule{0ex}{0ex}}4.7$
Answer
1
Tanmaya Darisi
Subject: Maths
, asked on 13/4/18
Q. A trust caring handicapped children gets Rs. 30000 every month from its donors. The trust spends half of the funds received for medical and educational care of the children and for
that it charges 2% of spent amount from them, and deposited the balance amount in a private bank to get the money multiplied so that in future the trust goes functioning regularly.
What percent of interest should the trust get from the bank so to get from the bank so to get a total of Rs. 1800 every month?
Use matrix method, to find the rate of interest. Do you think people donate to such trusts?
42. There are 2 families A and B. There are 4 men, 6 women and 2 children in family A, and 2 men, 2 women and 4 children in family B. The recommended daily amount of calories is 2400, 1900 and 1800 for each man, women and child respectively, and amount of proteins is 45 grams, 55 grams and 33 grams for each man, woman and child respectively. Represent the above information using matrices.
Using matrix multiplication, calculate the total requirement of calories and proteins for each of the 2 families. What awareness can you create among people about the balanced diet from this question?
Answer
1
Tanmaya Darisi
Subject: Maths
, asked on 13/4/18
Express the following matrices as the sum of symmetric and skew-symmetric matrices and verify your result:
(i)
$\left[\begin{array}{ccc}3& 2& 5\\ 4& 1& 3\\ 0& 6& 7\end{array}\right]$
(ii)
$\left[\begin{array}{ccc}3& -2& -4\\ 3& -2& -5\\ -1& 1& 2\end{array}\right]$
Answer
1
Pallavi Chauhan
Subject: Maths
, asked on 8/4/18
↵
Last
two questions plz tell the way or answer:
Q 75. Find the values of x, y, z if the matrix A-
$\left|\begin{array}{ccc}0& 2y& z\\ x& y& -z\\ x& -y& z\end{array}\right|$
obeys the law A' A =I
Q 76. Find 1/2(A+A') & 1/2 (A-A') When A=
$\left|\begin{array}{ccc}o& a& b\\ -a& 0& c\\ -b& -c& o\end{array}\right|$
Answer
3
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Please don't give any link...:\

$4.\mathrm{Using}\mathrm{elementary}\mathrm{row}\mathrm{operations},\mathrm{find}\mathrm{the}\mathrm{inverse}\mathrm{of}\mathrm{the}\mathrm{following}\mathrm{matrix}:\phantom{\rule{0ex}{0ex}}\mathrm{A}=\left[\begin{array}{ccc}2& -1& 3\\ -5& 3& 1\\ -3& 2& 3\end{array}\right]$

Please don't give any link..

$\mathbf{19}\mathbf{.}\mathbf{}IfA=\left[\begin{array}{cc}3& 2\\ -1& 1\end{array}\right]andB=\left[\begin{array}{cc}-1& 0\\ 2& 5\\ 5& 4\end{array}\right],find\left(BA\right)\text{'}.$

^{t}= 0Q.4. Find the inverse of the following matrices, if it exists, using elementary row operations :

(i) $\left[\begin{array}{ccc}2& 0& -1\\ 5& 1& 0\\ 0& 1& 3\end{array}\right]$

(ii) $\left[\begin{array}{ccc}1& 3& -2\\ -3& 0& -1\\ 2& 1& 0\end{array}\right]$

_{1}and x_{2}are 18 and 16$\frac{8}{13}$ respectively. The value of $\left|{x}_{1}-{x}_{2}\right|is$(a) 5

(b) 10

(c) 15

(d) 20

No links please.

(In the list for selecting the chapter, I am not getting binomial, so I am putting this question in the category of matrices. Sorry for inconvenience.)

$\mathit{Q}\mathbf{.}\mathbf{2}Byelementoryrowtransformation,findtheinverseof\phantom{\rule{0ex}{0ex}}A=\left[\begin{array}{ccc}3& -1& 2\\ -4& 0& 5\\ 1& 3& 2\end{array}\right]$

No links please

that it charges 2% of spent amount from them, and deposited the balance amount in a private bank to get the money multiplied so that in future the trust goes functioning regularly.

What percent of interest should the trust get from the bank so to get from the bank so to get a total of Rs. 1800 every month?

Use matrix method, to find the rate of interest. Do you think people donate to such trusts?

42. There are 2 families A and B. There are 4 men, 6 women and 2 children in family A, and 2 men, 2 women and 4 children in family B. The recommended daily amount of calories is 2400, 1900 and 1800 for each man, women and child respectively, and amount of proteins is 45 grams, 55 grams and 33 grams for each man, woman and child respectively. Represent the above information using matrices.

Using matrix multiplication, calculate the total requirement of calories and proteins for each of the 2 families. What awareness can you create among people about the balanced diet from this question?

(i) $\left[\begin{array}{ccc}3& 2& 5\\ 4& 1& 3\\ 0& 6& 7\end{array}\right]$ (ii) $\left[\begin{array}{ccc}3& -2& -4\\ 3& -2& -5\\ -1& 1& 2\end{array}\right]$

Q 75. Find the values of x, y, z if the matrix A-$\left|\begin{array}{ccc}0& 2y& z\\ x& y& -z\\ x& -y& z\end{array}\right|$ obeys the law A' A =I

Q 76. Find 1/2(A+A') & 1/2 (A-A') When A= $\left|\begin{array}{ccc}o& a& b\\ -a& 0& c\\ -b& -c& o\end{array}\right|$