Can someone check these?

[chadsobey]

I tried working out these problems and I'll give you the answers I got. Would you mind telling me if they're wrong or right and what I need to fix?

-2X = [10 -6 20 16]
For the answer I got [-5 3 -10 -8]

-4B = [-24 12 8]
For the answer I got [6 -3 -2]

[-9 -16 3] = Y - [3 7 2]
For the answer I got [-6 -9 5]

[-10 -4] + A = [1 3]
For the answer I got [11 7]

 

[mmm4444bot]

I do not understand your notation.

Also, are you trying to play Jeopardy ?

I mean, you're giving us answers, and we're supposed to come up with the questions ? :?

 

[chadsobey]

Re:

I do not understand your notation.

Also, are you trying to play Jeopardy ?

I mean, you're giving us answers, and we're supposed to come up with the questions ? :?

I was looking for someone to check those equations by working them out then telling me if I got the correct answer. If I didn't get the right answer I wanted guidance into the right direction.

 

[mmm4444bot]

-2X = [10 -6 20 16]

For the answer I got [-5 3 -10 -8]

< Sigh >

I'll take a guess, and say that the question is:

X is a 1×4 matrix.

Scalar multiplication of matrix X by -2 results in the following matrix.

[10 -6 20 16]

What is matrix X ?

Is this the correct question ?

If my interpretation is correct for the first exercise, then it look like you came up with: X is the matrix [-5 3 -10 -8].

To check this result, we only need to ask the following.

Does -2 times -5 equal 10 ?

Does -2 times 3 equal -6 ?

Does -2 times -10 equal 20 ?

Does -2 times -8 equal 16 ?

If your answer to each of these four questions is "yes", then your matrix for X must be correct.

I mean, you're asking us to verify simple arithmetic. Do you have a calculator ?

OTHERWISE, if the notation [10 -6 20 16] means something other than a matrix, I don't understand what it is.

In the future, if you would like somebody here to check your results to some specific exercise, please tell us what it is.

Kapish ?

 

[chadsobey]

Re:

-2X = [10 -6 20 16]

For the answer I got [-5 3 -10 -8]

< Sigh >

I'll take a guess, and say that the question is:

X is a 1×4 matrix.

Scalar multiplication of matrix X by -2 results in the following matrix.

[10 -6 20 16]

What is matrix X ?

Is this the correct question ?

Listen, there is no question. It's those equations listed and it says solve. Don't get worked up about it, but thanks for trying.

 

[mmm4444bot]

Listen, there is no question.

Then I do not understand why you're here. :?

 

[Deleted member 4993]

I tried working out these problems and I'll give you the answers I got. Would you mind telling me if they're wrong or right and what I need to fix?

-2X = [10 -6 20 16]
For the answer I got [-5 3 -10 -8]

-4B = [-24 12 8]
For the answer I got [6 -3 -2]

[-9 -16 3] = Y - [3 7 2]
For the answer I got [-6 -9 5]

[-10 -4] + A = [1 3]
For the answer I got [11 7]

I guess it is comparable to vector or matrix manipulation - and you need to find the vector for the "variable".

If that is so - it looks good.....