`|(4,5),(2,3)|` is equal to

{:[(7,1,2),(9,2,1)]:}{:[(3),(4),(5)]:}+2{:[(4),(2)]:} is equal to

15. For matrix A=[(2,3),(-4,5)] , (adjA)^T is equal to (A) [(5,-3),(4,2)] (B) [(5,4),(-3,2)] (C) [(5,3),(4,-2)] (D) [(5,-3),(-4,2)]

(1)/(2)+(2)/(5)+(3)/(4) is equal to

If the sum of first 15 terms of series ((4)/(3))^(3)+(1(3)/(5))^(3)+(2(2)/(5))^(3)+(3(1)/(5))^(3)+4^(3) is equal to (512)/(2)k then k is equal to:

|[5,-6],[3,2]|+|[-4,6],[3,4]| is equal to