uiz has $5$ problems which have to be done in $13$ minut

Question $3$

Consider the following function $f(x)=3x1$

Let $\underset{x1}{lim}(3x1)=L$

a$)$ Find the limit $L.$

$($b$)$ Find the largest $>0$ such that

$|f(x)-L|<mn>0</mn><mn>.</mn><mn>0</mn><mn>1</mn>$ whenever

$($Round your answer to five decimal places.$)$

$=$