Fraction and Decimal: Reciprocal of x's non-integer The reciprocal part of x 's non-integer d

Lovellss

Lovellss

Answered question

2022-06-25

Fraction and Decimal: Reciprocal of x's non-integer
The reciprocal part of x's non-integer decimal part equals x + 1, and x > 0. What is x?
Solution: I tried this way-
Let's n= integer part of x
1 / x n = x + 1
or, 1 = ( x n ) ( x + 1 )
or, 1 = x 2 + x n x n
or, x 2 + ( 1 n ) x ( n + 1 ) = 0
but, stucked here. Is there any other way?

Answer & Explanation

Esteban Johnson

Esteban Johnson

Beginner2022-06-26Added 15 answers

To complete Ashvin Swaminathan's answer:
x = n 1 ± n 2 + 2 n + 5 2
Because x > 0, we take
x = n 1 + n 2 + 2 n + 5 2
Since the discriminant n 2 + 2 n + 5 = ( n + 1 ) 2 + 4 4, then there are indeed infinitely many solutions, and these depend on n = x
landdenaw

landdenaw

Beginner2022-06-27Added 8 answers

Solve for x using the quadratic formula. As stated, there are infinitely many solutions...

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