0 votes 0 votes The directional derivative of the field $u(x,y,z) = x^2-3yz$ in the direction of the vector $(\hat{i}+\hat{j}-2 \hat{k})$ at point $(2, -1, 4)$ is _________. Calculus gate2015-ce-1 numerical-answers calculus vector-identities directional-derivatives + – Milicevic3306 asked Mar 26, 2018 retagged Mar 11, 2021 by Lakshman Bhaiya Milicevic3306 11.9k points answer See all 0 reply