question on instantaneous power

Anita Lei (alei@engineer.com) Tue, 29 Feb 2000 04:20:22 -0500 (EST) 

Date: Tue, 29 Feb 2000 04:20:22 -0500 (EST)
From: Anita Lei <alei@engineer.com>
Subject: question on instantaneous power



Hi,

Does anyone know why we have to take the square root of the power in Example
4.3 on p.152 when looking for ai?  Thanks in advance.

Anita

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