# Question of the Day 25-01-2020

Question of the Day
GATE 2014   EE   Question No. 213

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

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