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Asked by Fawaz Qureshi

Jan 4, 2015

Prove that "Reversal Law of Transpose" fully , i.e (AB)T = BTAT

Answer.

Let A = [ aij ]m×n and B = [ bjk ]n×p then
A' = [ cji ]n×m and B' = [ dkj ]p×n where cji = aij , dkj = bjk
The matrix AB will be order m×p, ...

Answer (2)

Asked by Kishore Kumar

Feb 2, 2014

If A and B are symmetric matrices of the same order, then show that AB is symmetric if and only if A and B commute, that is AB = BA

Since AB is symmetric, we have AB = (AB)T
But (AB)T = BT AT
Hence AB = BT A…(1)
It is also given that A and B...

Answer (1)

Asked by Misha Jain

Apr 22, 2014

 The sales figure of two car dealers during January 2007, showed that dealer A sold 5 deluxe, 3 premium and 4 standard cars, while dealer B sold 7 deluxe, 2 premium and 3 standard cars. Total sales over the 2 month period of January- February revealed that dealer A sold 8 deluxe, 7 premium and 6 standard cars. In the same two month period dealer B sold 10 deluxe, 5 premium and 7 standard cars. Write 2*3 matrices summarizing sales data for January and 2 month period for each dealer.

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Answer (1)

Asked by Sanaya

May 16, 2014

a matrix of 3x3 is given if AA'=A'A and B= A inverseA' than find BB'=?

Sol:
Given that AA' = A'A and B = A-1 A'

B' = ( A-1 A')' = ( A-1)' (A')' = (A')-1 A

now B...

Answer (1)

Asked by Deepak

Mar 25, 2016

The maximum marks for an examination is 900. A student fails by 43 marks if he gets 33% of the maximum marks. What are the pass marks?

Passing marks = 33% of 900 + 43
                         = 297 + 43
 &#...

Answer (1)

Asked by Sumanto

Jan 1, 2016

A positive number exceeds its square root by 30.Find the number.

6

Answer (1)

Asked by Archana V venkatesan

Jul 19, 2013

can u suggest me a better way to understand the transformations in the last of our text book. like how to identify the operation that has to be performed to arrive at the soluution

hi....hi t u i m yaswanth frm Andhra...can u tell me abut this website...?

Answer (2)

Asked by Puneet

May 7, 2014

A=[1 2

     3 4]

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Answer (1)

Asked by Ashish

Feb 26, 2015

What is symmetric and skew symmetric.


Symmetric matrix :

A square matrix A = [aij] is said to be symmetric if A' = A

Answer (1)

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