Let f(x) =x and g(x)=|x| be two real-valued functions, check whether the functions are one -one.

Let f(x)= sqrtx and g (x) = x be two functions defined over the set of non-negative real numbers. Find (f+ g) (x), (f-g)(x), (fg) (x) and (f/g) (x).

If f(x)=sqrtx and g(x)=x be two functions defined over the set of non negative real numbers, then (fg)(x) is:

Show that the function f(x) = 2x+9 is one-one.

Whether the following functions are one-one? f(x) = |x|

Whether the following functions are one-one? f(x) = x^2

If f(x) is an even function, state whether f'(x) is an odd function or an even function.

Whether the following functions are one-one? f(x) = x|x|

if f(g(x)) is one-one function, then

If f (X = X^2 - 3x + 2 be a real valued function of the real variable, find fof.