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Well.. this is the formula to get the derivative of the modulus -

d|f(x)|/dx = [ |f(x)|/f(x) ] * f'(x)

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14y ago

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It's either 1 or -1 when x is not equal to zero; at that point |x| is non-differentiable.

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12y ago
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Q: What is the derivative of modulus of x?
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