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Simplifying the exponents

• To: mathgroup at smc.vnet.net
• Subject: [mg79994] Simplifying the exponents
• From: "Jung-Tsung Shen" <jushen at gmail.com>
• Date: Fri, 10 Aug 2007 01:50:42 -0400 (EDT)

Hello, I would like to ask a question which I haven't been able to
find a solution that does not need human intervening.

I would like to simplify the following expression

Exp[I (q1 y1 + q2 y2 + q3 y3) - I (qp1 y1 + qp2 y2 + qp3 y3)]

according to y1, y2, and y3 so it would look like

Exp[I (q1-qp1) y1+ I (q2-qp2) y2 + I (q3-qp3) y3], or

Exp[I (q1-qp1) y1] * Exp[I (q2-qp2) y2] * Exp[I (q3-qp3) y3]

How could I achieve this in an efficient way?

Thanks.

JT

• Follow-Ups:
  • Re: Simplifying the exponents
    • From: "Jung-Tsung Shen" <jushen@gmail.com>
  • Re: Simplifying the exponents
    • From: Andrzej Kozlowski <akoz@mimuw.edu.pl>