Question

doubts on matrices
P.S. i am 90 percent sure of the answers bt still to make it 100 percent

Answer 1

1.square matrices can be mulltiplied only if they are of the same order?
2.What is the order of the product matrix got by multiplying 2 square matrices of same order?
3.Does a skew matrix always have diagonal elements =0?
4.Does diagonal elements=0 always imply the matrix is skew symmetric?

Answer 2

these are the doubts which came when i studied matrix chapter in my textbook

Answer 3

@FoolForMath , @apoorvk , @dpaInc , @AccessDenied , @estudier , @Mani_Jha , @asnaseer

Answer 4

help pls

Answer 5

1. yes. basically for two matrices of order (mxn) and (ixj) to be mutipliable, m = j. Now you can guess what happens in the case of square matrices.

Answer 6

k i was 97 percent sure of 1st one :P

Answer 7

2. Same as the order of each square matrix.

Answer 8

you might find this reference useful: http://home.scarlet.be/math/matr.htm

Answer 9

Okay let's do something. Try to guess the last two. (and put forward any reason you think for your answer). You know what skew-matrices are?

Answer 10

ys

Answer 11

i think diagonal elements always will be 0

Answer 12

@asnaseer has posted wonderful link, it's well organised and quite informative. Go through that to clear your theory doubts. Then try to guess the last two. :)

Answer 13

3.i think diagonal elements always will be 0
4.i think that also is true
am i wrong?

Answer 14

thx @asnaseer

Answer 15

nw i think 4 is false

Answer 16

3. Yes, you are right. reasons? ;)
4 Nope. (HINT: All skew-matrices have diagonal elements zero, but all matrices with diagonal elements zero aren't skew - try to remember the way it's defined)

Answer 17

Yeah 4. is false. Clear with this? :)

Answer 18

ya thx a lot :)

Answer 19

are u good in relations and functions?

Answer 20

...........

Answer 21

I don't know what am good at, but you can always ask, and I can always try :P