![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=64d82ca234a3b968f976a0870b488a22.png\")
and 0.Graph f is not differentiable at and 0.
The function is not differentiable at ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=64d82ca234a3b968f976a0870b488a22.png\")
, because it is a corner point. \ \
The function is not differentiable at 0, because f is discontinuous. \ \
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The function is not differentiable at , because it is a corner point. \ \
The function is not differentiable at 0, because f is discontinuous.
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