Use Definition 1.1.4 to prove that {x:|x| < 1} = (-1,1). Definition 1.1.4: If x is a real number, we define |x| to be x if x > 0, and -x if x < 0.

Q: Depine derivative, alse derivative and right devivative? de hand Le7t hand

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A: We will find out the required value.

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A: Data1087106195610871067103214321058

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A: we have to find first derivative

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