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Question: Simplification of expression with Maple

Question:Simplification of expression with Maple

Zihan 65 Maple
simplification
February 25 2016
3

 I am haunted by an equation which I could simplify it with hand and it equals to −i (complexe number). But, I don't know how to use maplesoft to simplify it. The equation takes the form of:

 

-Omega*a*sqrt(2)*sqrt(-Omega^2*a^2-2*k*m+sqrt(Omega^2*a^2*(Omega^2*a^2+4*k*m)))/(-Omega^2*a^2+sqrt(Omega^2*a^2*(Omega^2*a^2+4*k*m)))



I could simplify this equation with hand calculation and it equals to -i (the complexe number). I'am sorry for not clarifying that the a, k, Ω and m are positive variables.

Thank you in advance for taking a look.
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