$2$ Formula $1$ point

A potential function $($source flow$)$ is given by $(x,y)=\frac{m}{4}ln(x^2+y^2)$ where m is a constant. For $m=319\mathrm{.}71,$ determine the velocity in $\frac{m}{s}$ in the x direction at a point where $x=4\mathrm{.}54$ and $y=2\mathrm{.}24,$ both in meters.

Type your answer...