# Second Derivative Test Example - Sketching y = x^4 - 4*x^3

in MES Science2 months ago (edited)

In this video I illustrate further on using the Second Derivative Test by going over a very useful example to show how you can use this test to help sketch a function by hand, noting where it is concave upwards or downwards, local max and min, and the inflection points.

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# Example

Sketch the curve y = x4 - 4x3 and determine concavity, inflection points, and local max / min.

## Solution

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thanks for the class
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