For a position vector {r}↖{→}=x {i}↖{∧}+y {j}↖{∧}+z {k}↖{∧} the norm of the vector can be defined as ∣r↖{→}|√{x^{2}+y^{2}+z^{2}}. Given a function \ϕ=\In|{r}↖{→}|, its gradient ∇ \ϕ is

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Examsnet · Accepted Answer

Correct Answer is :  ‌→r→r⋅→r

GATE Mechanical Engineering (ME) 2018 Shift 2 Solved Paper