# Second Derivative Test Examples

### Example 1

Let |

### Example 2

Let |

### Example 3

Let |

From 11:00PM PDT on Friday, July 1 until 5:00AM PDT on Saturday, July 2, the Shmoop engineering elves will be making tweaks and improvements to the site. That means Shmoop will be unavailable for use during that time. Thanks for your patience!

We have changed our privacy policy. In addition, we
use cookies on our website for various purposes. By continuing on our website, you consent
to our use of cookies. You can learn about our practices by reading our
privacy policy.

Let |

Let |

Let |

Advertisement