For an ideal gas at constant temperature, the variables $p$ (pressure) and $v$ (volume) are related by the equation $pv^k=c$, where $k$ and $c$ are constants. If the volume is changed slightly from $v$ to $v+Δv$, what quadratic approximation expressing $p$ in terms of $Δv$ would you use?
(Find the approximation valid for $Δv≈0$.)
problems with letters are definitely not my fad.
could anyone please help?