Question

limit x tends to infinity 2^x-1 tan (a/2x)​

Answer 1

I cannot figure out how to solve this trigonometric limit:

limx→0(1x2−1tan2x)

I tried to obtain x2tan2x, cos2xsin2x and simplify, and so on. The problem is that I always go back to the indeterminate ∞−∞

Has someone a different approach to solve this limit?

Answer 2

Answer:

Step-by-step explanation:

limx→0(1x2−1tan2x)