Let `f(x)=x^2 +4x +1`. Then (A) f(x)> 0 for all x (B) f(x)> 1 when `x ge0` (C) `f(x) ge 1` when `x le-4` (D) f(x)=f(-x) for all x

Let f(x)=x^(2)+4x+1. Then (A) f(x)>0 for all x(B)f(x)>1 when x>=0 (C) f(x)>=1 when x<=-4(D)f(x)=f(-x) for all x

If f(x) ge0 for all x, then f(2-x) is

Let f(x)=x^3-6x^2+15 x+3 . Then, (a) f(x)>0 for all x in R (b) f(x)>f(x+1) for all x in R (c) f(x) is invertible (d) f(x)<0 for all x in R

If f''(x) le0 "for all" x in (a,b) then f'(x)=0

If f''(x) le0 "for all" x in (a,b) then f'(x)=0

Let f(x)=x^(3)-6x^(2)+15x+3. Then,(a) f(x)>0 for all x in R( b) f(x)>f(x+1) for all x in R( cl )f(x) is invertible (d) f(x)<0 for all x in R

Let f(x) =(x+1)^2-1,x ge -1 then {x: f(x) =f^(-1)(x) } =

Let f(x) = (x+1)^2 -1, x ge -1 ). Then the set {x: f(x) = f^(-1) (x)} is

If f'(x) gt f(x)" for all "x ge 1 and f(1)=0 , then

If f(x) defined by f(x)={(|x^2-x|)/(x^2-|x|),x!=0,1-1 . Then (A)f(x) is continuous for all x (B) for all x except x=0 (C) for all x except x=1 (D) for all x except x=0 and x=1