(1,3),(0,-2)" and "(-3,1)

Show that the points (2,-1,3), (0,1,2) and (1,-3,1) are the vertices of an isosceles right angled triangle.

State which of the following matrices are symmetric , skew symmetric , both or not either . [{:(1,0,3),(0,-1,2),(3,2,1):}]

Using section formaul, show that the points (2, -1, 3), (0, 1, 2) and (2/3, 1/3, 7/3) are collinear.

Using section formaul, show that the points (2, -1, 3), (0, 1, 2) and (2/3, 1/3, 7/3) are collinear.

Let's plot the points representing the coordinates (1,3),(0,5), (2,1),(3,3),(1,3),(2, 5) and (0,0) on the graph paper.

If A = {:[(1,2,3),(0,-1,4),(3,2,1)] , find (A')^-1

If A = {:[(1,2,3),(-1,0,2),(1,-3,-1)], B = [(4,5,6),(-1,0,1),(2,1,2)] and C = [(-1,-2,1),(-1,2,3),(-1,-2,2)] , verify that: A+(B +C) = (A+B) + C

IF A=[{:(3,2,-1),(2,-2,0),(1,3,1):}],B=[{:(3,-1,0),(2,1,3),(4,-1,2):}] and X=A+B then find X.

IF A=[{:(3,2,-1),(2,-2,0),(1,3,1):}]B=[{:(-3,-1,0),(2,1,3),(4,-1,2):}] and X=A+B then find X.