First slide

Introduction to limits

Question

For a >1 then $\underset{x \to \infty}{L i m} \frac{a^{x} - a^{- x}}{a^{x} + a^{- x}} =$

Moderate

A

1
B

$\frac{1}{2}$
C

$\frac{1}{3}$
D

$\frac{1}{15}$

Solution

Divide with $a^{x}$

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