Showing this fraction is less than one? And also, what are some techniques to show such a thing. Th

skylsn

skylsn

Answered question

2022-06-14

Showing this fraction is less than one?
And also, what are some techniques to show such a thing. That is, what are standard techniques for showing a fraction is less than one? I'm just trying to refresh/improve/add to my toolbox.
The fraction I am working with is:
t x ( t x + 1 ) + t 2 ( t x + 1 ) 2
The problem is: Show
t x ( t x + 1 ) + t 2 ( t x + 1 ) 2 1  for  x t ,   t 0
I have been trying to move the denominator to the right and show that the numerator is less than the denominator, but I am not seeing any clean cancellations, or obvious result.

Answer & Explanation

Nola Rivera

Nola Rivera

Beginner2022-06-15Added 21 answers

Since x t 0, we have t x 1 and so
t 2 t x t 2 t x + 1 t x ( t x + 1 ) + t 2 t x ( t x + 1 ) + t x + 1 t x ( t x + 1 ) + t 2 ( t x + 1 ) 2   .

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