Solve:`|[49,1,6],[39,7,4],[26,2,3]|`

Express [[4,3,7],[6,5,-8],[1,2,6]] as the sum of a symmetric matrix and a skew symmetric matrix .

solve : |{:(x-2,2,5),(x-7,3,6),(2x-6,4,7):}|=0

The matrix X for which [[1,-4],[ 3,-2]]X=[[-16-,6],[ 7 ,2]] is a. [[-2, 4],[-3, 1]] b. [[-1/5, 2/5],[-3/(10),1/5]] c. [[-16, 16],[ 7 ,2]] d. [[6, 2],[(11)/2, 2]]

Solve for x and y, if 2{:[(x,5),(7,y-3)]+{:[(3,4),(1,2)]={:[(7,14),(15,14)]:}

Show that (i) [(5,-1),(6,7)][(2,1),(3,4)] ne [(2,1),(3,4)][(5,-1),(6,7)] (ii) [(1,2,3),(0,1,0),(1,1,0)][(-1,1,0),(0,-1,1),(2,3,4)] ne [(-1,1,0),(0,-1,1),(2,3,4)][(1,2,3),(0,1,0),(1,1,0)]

Find the minor of elements 6 in the determinants Delta = {:|( 1,2,3),(4,5,6),(7,8,9)|:}

|{:(1,3,5),(2,4,3),(4,6,7):}|

Solve |x+1|+|2x-3|=4.

Mode of .2, 7, 5, 3, 7, 1, 6, 9, 7, 3, 6, 3 is