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Hello, Eraser147!
 \:=\:\frac{x+2}{x^2+5})
An informal sketch gives us a serpentine curve.
The derivative simplifies to: .Code:| | * | * : * * : * -5 *| : * -----------+------*-+----+------------- * : * | 1 * : * | * : * | * | |
Hence, the extrema are at:
And: .
Therefore, the range is:
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