
is differentiable everywhere except at

There the derivative limit from the left gives -1 and from the right +1, different, so no derivative at
Answer:
no
Step-by-step explanation:
assuming these are slopes?? two points cant be parallel theyre just dots, no these are not parallel
Please mark as brainliest
Answer:
See the picture
Step-by-step explanation:
Interval (-∞, 1] U (8, ∞)
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