Question: (2) [10 pts] Show that the function f@) 4 arctan x 2x + 1 has exactly three real roots.

(2) [10 pts] Show that the function f@) 4 arctan x 2x
+ 1 has exactly three real roots.

(2) [10 pts] Show that the function f@) 4 arctan x 2x + 1 has exactly three real roots.

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