If expression `x^2-4cx+b^2gt0 AA x in R`and `a^2+c^2ltab`, then the range of the function is `(x+a)/(x^2+b x+c^2)` is

If expression x^(2)-4cx+b^(2)>0AA x in R and a^(2)+c^(2)

If expression x^2-4cx+b^2gt0 for all x epsilon R and a^2+c^2ltab then range of the function (x+a)/(x^2+bx+c^2) is (A) (0,oo) (B) (0,oo) (C) (-oo,oo) (D) none of these

If expression x^2-4cx+b^2gt0 for all x epsilon R and a^2+c^2ltab then range of the function (x+a)/(x^2+bx+c^2) is (A) (0,oo) (B) (0,oo) (C) (-oo,oo) (D) none of these

If b^(2)-4ac=0,a>0 then the domain of the function f(x)=log(ax^(3)+(a+b)x^(2)+(b+c)x+c) is :

If the graph of the function y=(a-b)^(2)x^(2)+2(a+b-2c)x+1(AA a ne b)

If f(x) = (x^2 -2x + 4)/(x^2+2x+4), x in R then range of function is

The quadratic expression ax^(2)+bx+c>0 AA x in R ,then

If f(x)=(x^(2)-2x+4)/(x^(2)+2x+4),x in R then range of function is