We are given,
Substituting to get,
As, this limit is undefined so the other approach would be,
Now, multiplying numerator by and multiplying denominator by to get,
Using the formula, to get,
.
We are given,
Substituting to get,
As, this limit is undefined so the other approach would be,
Now, multiplying numerator by and multiplying denominator by to get,
Using the formula, to get,
.