Question
Evaluate the following limit:
$\lim\limits_{\text{x}\rightarrow0}\frac{\text{a}^\text{x}+\text{a}^{-\text{x}}-2}{\text{x}^2}$
$\lim\limits_{\text{x}\rightarrow0}\frac{\text{a}^\text{x}+\text{a}^{-\text{x}}-2}{\text{x}^2}$
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$\left(\frac{x}{a}-\frac{a}{x}\right)^{10}$
$a_{i j}=\frac{(i+j)^3}{5}$
$\sum_{n=1}^{\infty} 0.4^n$
$\left(\frac{x}{y}+\frac{y}{x}\right)^{12}$