Question

Solve : $\underset{x\to 0}{lim}$ $\frac{1-cosmx}{1-cosmx}$

Answer 1

Consider the given limit,

$\Rightarrow {lim}_{x\to 0}\frac{1-\cos mx}{1-\cos mx}$

$\Rightarrow {lim}_{x\to 0}1$

$\Rightarrow 1$

Hence, this is the answer.