GATE EE Question of the Day 25-01-2020

Question of the Day

GATE 2014 EE Question No. 213

Let $\nabla . (f v) = x^{2} y + y^{2} z + z^{2} x$ ,where f and v are scalar and vector fields respectively. If $v = y i + z j + x k$ then $v . \nabla f$ is