$[-/0\mathrm{.}71$ Points$]$

$$ SCALC$72\mathrm{.}1\mathrm{.}036.$

The limit represents the derivative of seme function $f$ at some number $a.$ State such an $f$ and $a.$

$\underset{x\frac{}{4}}{lim}\frac{tan(x)-1}{x-\frac{}{4}}$

$f(x)=tan(x),a=\frac{}{2}$

$f(x)=tan(x),a=-\frac{}{4}$

$f(x)=tan(x),a=\frac{}{4}$

$f(x)=tan(x),a=$

$f(x)=tan(x),a=0$