If `3A=[-1-2-2 2 1-2x-2y]` such that `AA^T=I` , then which of the following are correct? `x+2y=4` (b) `x-y=1` `x^2+y^2=-3` (d) `x^2+y^2=5`

If 3A=[(-1,-2,-2),(2,1,-2),(x,-2,y)] such that A A^T=I , then which of the following are correct? (A) x+2y=4 (B) x-y=1 (C) x^2+y^2=-3 (D) x^2+y^2=5

Which of the following is not a monomial? 2x^2+1 (b) 3x^4 a b (d) x^2y

Which of the following is correct in respect of the equations (x-1)/2=(y-2)/3 and 2x+3y=5 ?

If x=10 and y=0.1, which of the following is the greatest? x^(2)+y^(2)( b) x^(2)-y^(2)( c) x^(2)backslash y^(2) (d) (x^(2))/(y^(2))

If 3A-[[1,2,2],[2,1,-2],[x,2,y]] and "A^(T)A-AA^(T)-I , then xy is equal to

If a function is represented parametrically be the equations x=(1+(log)_e t)/(t^2); y=(3+2(log)_e t)/t , then which of the following statements are true? (a) y^('')(x-2x y^(prime))=y (b) y y^(prime)=2x(y^(prime))^2+1 (c) x y^(prime)=2y(y^(prime))^2+2 (d) y^('')(y-4x y^(prime))=(y^(prime))^2

If the circle " x^(2)+y^(2)=1 " cuts the rectangular hyperbola " xy=1 " in four points (x_(i),y_(i)),i=1,2,3,4 then which of the following is NOT correct 1) " x_(1)x_(1)x_(3),x_(4)=-1 ," 2) " y_(1)y_(2)y_(3)y_(4)=1 3) " x_(1)+x_(2)+x_(3)+x_(4)=0 ," 4) " y_(1)+y_(2)+y_(1)+y_(4)=0

The normal to the curve x^(2)=4y passing (1,2) is (A) x+y=3 (B) x-y=3 (D) x-y=1