Flickr

A.media type="custom" key="7441817" B.media type="custom" key="7441821"

C. media type="custom" key="7441841" D. media type="custom" key="7441865"

The images above are real-world examples that represent how a derivative might fail to exist. Identify the reason each image will not be differentiable.

The above images can be found at: A. [] B. [] C. [] D. []