If `x1,x2 epsilon(0,pi/2)` which one of the following expressions is correct?

If x = 2 and y = -1 , which one of the following expression is greater?

Consider f (x)= sin ^(5) x-1, x in [0, (pi)/(2)], which of the following is/are correct ?

Consider f (x)= sin ^(5) x-1, x in [0, (pi)/(2)], which of the following is/are correct ?

If f(x)=sin x,x in [-pi//2,pi//2] then which one of the following is not correct ?

If 0 le x le pi//2 , then which one of the following is always correct?

If f(x)={{:(mx+1,xle(pi)/(2)),(sinx+n,xgt(pi)/(2)):} is continuous at x=(pi)/(2) . Then which one of the following is correct?

"If "f(x)={{:(,-x-(pi)/(2),x le -(pi)/(2)),(,-cos x,-(pi)/(2) lt x le 0),(,x-1,0 lt x le 1),(,"In "x,x gt 1):} then which one of the following is not correct?

"If "f(x)={{:(,-x-(pi)/(2),x le -(pi)/(2)),(,-cos x,-(pi)/(2) lt x le 0),(,x-1,0 lt x le 1),(,"In "x,x gt 1):} then which one of the following is not correct?

If 0 lt x lty lt pi ,then which one of the following is correct?

If the equation sin^(2)x-a sin x+b=0 has only one solution in (0,pi) then which of the following statements are correct?