Find the Largest Open Interval Where the Function Is Changing $\quad f ( x ) = \frac { 1 } { x ^ { 2 } + 1 }$

question 252

Multiple Choice

Find the largest open interval where the function is changing as requested.
-Increasing $\quad f ( x ) = \frac { 1 } { x ^ { 2 } + 1 }$

• A) \(( 1 , \infty )\)
• B) \(( - \infty , 0 )\)
• C) \(( - \infty , 1 )\)
• D) \(( 0 , \infty )\)

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Definitions:

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