Question: If r is the position vector in space defined as xi + yj + zk, a = || is its magnitude and is equal

If r is the position vector in space defined as xi +

If r is the position vector in space defined as xi + yj + zk, a = || is its magnitude and is equal to (x + y + z), and n is an integer then find the gradient of the given expression (write your answer in terms of r, and a): A = an

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