?For the following exercises, find the directional derivative of the function in the
Chapter 4, Problem 279(choose chapter or problem)
For the following exercises, find the directional derivative of the function in the direction of the unit vector \(\mathbf{u}=\cos \theta i+\sin \theta \mathbf{j}\).
\(f(x,\ y)=\ln(x+2y),\quad\theta\ =\frac{\pi}{3}\)
Text Transcription:
f(x,\ y)=\ln(x+2y),\quad\theta\ =\frac{\pi}{3}
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