2.1.69 Calculation of limits
condition: Find the limit using L'Hopital's rule: \[ \lim _{x \rightarrow-3}\left(\frac{4}{\ln (x+4)}-\frac{4 x}{x+3}\right) \text {. } \]
Calculation of various limits, using L'Hopital's rule, remarkable limits, power series, equivalent values of various other methods.