$\"\"$

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The cubic function is $\"\"$ .

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Apply derivative with respect to $\"\"$ .

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$\"\"$

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Apply derivative with respect to $\"\"$ .

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$\"\"$

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$\"\"$

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Find the inflection points by equating the second derivative to zero.

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$\"\"$

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The cubic function has the inflection points at $\"\"$ .

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$\"\"$

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$\"\"$

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Find the critical points by equating the first derivative to zero.

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$\"\"$

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The cubic function has the critical points at $\"\"$ and $\"\"$ .

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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The function has maximum point at $\"\"$ and minimum point at $\"\"$ .

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Substitute the point $\"\"$ in $\"\"$ . $\"\"$

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Substitute the point $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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Solve $\"\"$ and $\"\"$ .

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$\"\"$

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Substitute $\"\"$ in $\"\"$ and $\"\"$ .

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$\"\"$

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$\"\"$

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Substitute $\"\"$ , $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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Substitute $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$ .

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$\"\"$

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$\"\"$ .