I need this answered to see if I did it right:
-2 4 -6 1 -1 1
1 -1 0 x's 3 0 -2
0 2 3 4 -6 7
2006-07-27 15:36:51 · 4 answers · asked by biznitchil 4 in Science & Mathematics ➔ Mathematics
they are suppose to be 3 x 3 matrices. and bracketed in, but it wouldn't let me..if you have further ?'s about how the set up is--contact me and i can e-mail it to you
2006-07-27 15:38:46 · update #1
Gee, it would be awful if I typed it. You can find all sorts of calculators to do this for you. There's one at http://www.quickmath.com/ , and you can find an explanation of the process here: http://people.hofstra.edu/faculty/stefan_Waner/RealWorld/tutorialsf1/frames3_2.html
The main thing to remember is that you count the rows going down the sides and the columns are counted going across. The elements go the other way (i.e., across for elements of rows and down for elements of columns). [-2, 4, -6] is the first row of the first matrix. [-2, 1, 0] transposed is the first column of the first matrix. It can be rather boring at times, but sometimes it must be done! Good luck!
2006-07-27 15:44:02 · answer #1 · answered by anonymous 7 · 0⤊ 0⤋
If your matrices look like this:
A =
-2 4 -6
1 -1 1
1 -1 0
B =
3 0 -2
0 2 3
4 -6 7
Then
A*B =
-30 44 -26
7 -8 2
3 -2 -5
2006-07-27 16:08:33 · answer #2 · answered by 1,1,2,3,3,4, 5,5,6,6,6, 8,8,8,10 6 · 0⤊ 0⤋
-14, -34, -52
-2, -1, 3
18, -18, 17
I am almost sure.
P.S. Go to www.artofproblemsolving.com and register. Post ANY math questions there and you will get professional help.
2006-07-27 15:46:09 · answer #3 · answered by Purple 2 · 0⤊ 0⤋
I love matrices
The only stuff in math i ever sort of enjoyed, they are sort of like puzzles
2006-07-27 15:40:26 · answer #4 · answered by Heather 4 · 0⤊ 0⤋