If `x : y=3:4,\ t h e n\ (2x+3y):(3y-2x)` would be equal to `2:1` b. `3:1` c. `3:2` d. `21 :1`

If x:y=3:4,quad thenbackslash(2x+3y):(3y-2x) would be equal to 2:1 b.3:1 c.3:2 d.21:1

If x=2,y=1 then x^(4)+2x^(3)y-2xy^(3)-y^(4) is equal to

If x=1/3y a n d y=1/2, t h e n x : y : z is equal to 1:2:6 b. 1:3:6 c. 2:4:6 d. 3:2:1

Comprehension 1 Let x ,\ y ,\ z in R^+&\ D=|xx^3x^4-1y y^3y^4-1z z^3z^4-1| If x!=y!=z\ &\ x ,\ y ,\ z are in A.P. and D=o,\ t h e n\ 2x^2z+x^2z^2 is equal to a. 1 b. 2 c. 3\ d. none of these

If 5x^2-13 x y+6y^2=, t h e n x : y is 2:1 on l y b. 3:5 on l y c. 5:3 or 1:2 d. 3:5 or 2:1

Ifx^2+y^2=1a n dP=(3x-4x^3)^2+(3y-4y^3)^2,t h e nPi se q u a lto

If x^2+y^2=t -1/t and x^4+y^4=t^2+1/t^2 then (dy)/ (dx) is equal to a) 1/(x^2y^3) b) 1/(xy^3) c) 1/(x^2y^2) d) 1/(x^3y)

If x=a t^2,\ \ y=2\ a t , then (d^2y)/(dx^2)= (a) -1/(t^2) (b) 1/(2\ a t^3) (c) -1/(t^3) (d) -1/(2\ a t^3)

If x=a t^2,\ \ y=2\ a t , then (d^2y)/(dx^2)= -1/(t^2) (b) 1/(2\ a t^3) (c) -1/(t^3) (d) -1/(2\ a t^3)

If x=a t^2,\ \ y=2\ a t , then (d^2y)/(dx^2)= -1/(t^2) (b) 1/(2\ a t^3) (c) -1/(t^3) (d) -1/(2\ a t^3)