[" If "x>0,y<0," then the point "(-x,y)" lies "],[" in "],[" a "Q_(1)],[" o "Q_(4)]

Draw the graphs of x =0, y =0,x=a,y=b

Draw the graphs of x =0, y =0,x=a,y=b

|{:(" "0," "x,y),(-x," "0,z),(-y,-z,0):}|=0

[" 11."," If "AB=BA" and "A=[[1,1],[0,1]]],[" ,then "B=," b."[[x,0],[y,0]]," d."[[x,y],[0,x]]],[" c."[[x,y],[0,y]],[[x,x],[1,x]]]

sec^(2)theta=(4xy)/((x+y)^(2)) is true if and only if x+y!=0 (b) x=y,x!=0x=y( d ) x!=0,y!=0

If |(y,x,0),(0,y,x),(x,0,y)|=0 and x ne 0 , then which one of the following is correct ?

sin^2 theta= (4xy)/(x+y)^2 is true if and only if (A) x-y!=0 (B) x=-y (C) x+y!=0 (D) x!=0,y!=0

If Delta= [[0 , x , -y ],[-x , 0 , z],[ y , -z , 0 ]] then

If 0.5x+0.7y=0.74 and 0.3x+0.5y=0.5 then