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SMO 2013 Senior Round 1 Question 26

SMO · SMO 2013 Senior Round 1

Question 26

Set $\{x\}=x-\lfloor x\rfloor$, where $\lfloor x\rfloor$ denotes the largest integer less than or equal to $x$. Find the number of real solutions to the equation

$$\{x\}+\{x^2\}=1,\qquad |x|\le10.$$