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Which term of the sequence 2x, 3x/2, x, ..., is -5x/2? 

Guest Jun 28, 2017
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Looks like x/2 is subtracted at each stage:

 

2x,  3x/2,  x,  x/2,  0,  -x/2,  -x,  -3x/2,  -2x,  -5x/2, ...

Alan  Jun 28, 2017

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