If `f(x)=x+1/x ,\ \ x >0` , then its greatest value is `-2` (b) 0 (c) 3 (d) none of these

If f(x) = x+ 1/x , x>0 then the greatest value of f(x) is (a) -2 (b)0 (c) 3 (d) none of these

If f(x)= x^(3) + (1)/(x^(3) )(x ne 0) , then its greatest value is-

If f(x)={xsin(1/x) ,\ x!=0, then (lim)_(x->0)f(x) equals a. 1 b . 0 c. -1 d. none of these

If x lies in the interval [0,\ 1] , then the least value of x^2+x+1 is (a) 3 (b) 3//4 (c) 1 (d) none of these

If 2f(x)-3f(1/x)=x^2(x!=0), then f(2) is equal to (a) -7/4("b")""5/2 (c) -1 (d) none of these

The number of value of x in [0,2] at which f(x)=|x-1/2|+|x-1|+tan x is not differentiable at (a) 0 (b) 1 (c) 3 (d) none of these

If a (A) x=0 (B) x=1 (C) x=2 (D) None of these.

If the function f(x)={(cosx)^(1/x),x!=0k ,x=0 is continuous at x=0 , then the value of k is (a) 0 (b) 1 (c) -1 (d) None of these

If f(x)={xsin1/x , x!=0 0, x=0 , then (lim)_(x->0)f(x) equals a. 1 b . 0 c. -1 d. none of these

The value of k which makes f(x)={sinx/x ,x!=0, and k , x = 0 , continuous at x=0 ,is (a) 8 (b) 1 (c) -1 (d) none of these