Share
Explore BrainMass

Directional derivative

Find the directional derivative of f at P in the direction of v; that is find D_u f(P), where u=v/{v}:
f(x, y, z)= ln(1 + x^2 +y^2 - z^2) ; P(1, -1, 1), v=2i - 2j -3k

Solution Preview

The directional derivative is:
D_u ...

Solution Summary

This shows how to find a directional derivative.

$2.19