If r^{\to} = xa^{\^}_{x} + ya^{\^}_{y} + za^{\^}_{z} and |r^{\to}{{}/{}|} = r, then div (r2∇ (In r)) = ______

GATE Electronics and Communications (EC) 2014 Shift 2 Solved Paper

Question : 39 of 65

Marks: +1, -0

r↖{→} = xa↖{\^}_{x} + ya↖{\^}_{y} + za↖{\^}_{z}

and

|r↖{→}{{}/{}|} = r

, then div (r2∇ (In r)) = ______

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