Give the point where |x|+|x+1| is differentiable
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Answer:
repeat 90000000000000000000
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Answer:
The short answer would be since |x||x| is not differentiable at x=0x=0 and |x−1||x−1| is not differentiable at x=1x=1, so f(x)f(x) will not be differentiable at x=0,1x=0,1 {Is it valid to claim this in every case ?}
Long answer:
f(x)=⎧⎩⎨1−2x12x−1 if x<0 if 0≤x<1 if x≥1f(x)={1−2x if x<01 if 0≤x<12x−1 if x≥1
limx→0+f(x)−f(0)x−0=limx→0+1−1x−0=0limx→0+f(x)−f(0)x−0=limx→0+1−1x−0=0
limx→0−f(x)−f(0)
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