Solve

Q3 Hikers on a mountain 1 Point Two hikers are standing on a mountain. Hiker A is located at (7, 4, 2), and hiker B is located at (7.3, 3.6, 2.1) (all distances are measured in kilometres). Suppose hiker A decides to walk towards hiker B in a straight line. At approximately what rate will his height increase with respect to his (@, y) displacement? In other words, what is approximately the directional derivative of the height function at (7, 4) in the u direction, where u is the direction vector from (7, 4) to (7.3, 3.6)? O -0.2 O 0.1 O 0.2 0 5 None of the above