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Ratio test

  • Thread starter foo9008
  • Start date
  • #1
678
4
Member warned about posting with no effort shown

Homework Statement


where does the 1(circled part) come from ? is it a mistake ?

Homework Equations




The Attempt at a Solution

 

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Answers and Replies

  • #2
Filip Larsen
Gold Member
1,237
169
Try look closer. There is a difference in the second expression apart from the 1.
 

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