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CBSE Class 12-science Answered

if a and b are the matrices of order 3 and (A)=5,(b)=3 then find the vailue of 3ab.
Asked by Aaditri | 12 Aug, 2018, 03:40: PM
Expert Answer
begin mathsize 16px style open vertical bar 3 AB close vertical bar equals 3 cubed open vertical bar AB close vertical bar equals 27 open vertical bar straight A close vertical bar. open vertical bar straight B close vertical bar equals 27 cross times 5 cross times 3 equals 405 end style
Answered by Arun | 13 Aug, 2018, 11:34: AM

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