Question

`lim_("x"-> 0) sqrt(1/2 (1 - "cos"  2"x"))/"x"` is equal to

पर्याय

• 1

• -1

• 0

• none of these

Answer 1

none of these

Explanation:

as `lim_("x"-> 0) sqrt(1/2 (1 - "cos"  2"x"))/"x"`

`lim_("x"-> 0) abs ("sin x")/"x"`

and LHL `ne` RHL at x = 0