Find #3((2,5,7),(-5,6,-2),(1,8,3))-((1,3,2),(-5,-3,0),(4,4,5))#?

1 Answer
Shwetank Mauria
Apr 10, 2017

#3((2,5,7),(-5,6,-2),(1,8,3))-((1,3,2),(-5,-3,0),(4,4,5))=((5,12,19),(-10,21,-6),(-1,20,4))#

Explanation:

We have to find

#3((2,5,7),(-5,6,-2),(1,8,3))-((1,3,2),(-5,-3,0),(4,4,5))#

#3# before first element means that each element of first has to be multiplied by #3# and then respective element of second matrix to be subtracted from first i.e. answer would be

#((3xx2-1,3xx5-3,3xx7-2),(3xx(-5)-(-5),3xx6-(-3),3xx(-2)-0),(3xx1-4,3xx8-4,3xx3-5))#

= #((5,12,19),(-10,21,-6),(-1,20,4))#

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