MathGroup Archive: February 2012 [00447]

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Re: simplifying algebraic expressions with Null

To: mathgroup at smc.vnet.net
Subject: [mg125148] Re: simplifying algebraic expressions with Null
From: danl at wolfram.com
Date: Fri, 24 Feb 2012 00:59:41 -0500 (EST)
Delivered-to: l-mathgroup@mail-archive0.wolfram.com
References: <7BB0E96E72E84E41B24A1FF8ED13F5E6299735C55D@IE2RD2XVS581.red002.local>

Indeterminate will generally eat its mathematical family members whole. So you could try

(expr /. Null->Indeterminate) /. Indeterminate->Null

Daniel Lichtblau
Wolfram Research

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