\"\"

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The function is \"\".

\

Observe the graph :

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The function \"\" is increasing on the intervals \"\".

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The function \"\" is decreasing on the interval  \"\".

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\"\"

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Find open interval analytically.

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\"\"

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Apply derivative to find the critical numbers.

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\"\"

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Equate it to zero .

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\"\"

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The critical point is \"\".

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Test intervals are \"\" and \"\".

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \
Test intervalsTest valueSign of \"\"Conclusion
\"\"\"\"\"\"Increasing
\"\"\"\"\"\"Decreasing
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So the function \"\" is increasing on the intervals \"\".

\

The function \"\" is decreasing on the interval  \"\".

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\"\"

\

The function \"\" is increasing on the intervals \"\".

\

The function \"\" is decreasing on the interval  \"\".