I want to substitude the

  1. I want to substitude the ray optics analysis with what are the resultant waves that happen. I say "resultant" because many waves
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    2. Theodore asked by Theodore
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  2. He keeps himself in good health.(What is the part of speech of 'in good health'? An adjective phrase or an adverbial phrase? I
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    2. rfvv asked by rfvv
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