If functions f and g are defined as:
f : \(\left[0, \frac{\pi}{2}\right]\) → R, f(x) = sin x and
g : \(\left[0, \frac{\pi}{2}\right]\) → R, g(x) = cos x
then _______.
1
f + g is one-one and fg is not one-one
2
f + g is not one-one and fg is one-one
3
f + g is not one-one and fg is not one-one
4
f + g is one-one and fg is one-one