nil1996
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how do we take derivative of modulus of a function??
Derivative of modulus of a function
- Context: Undergrad
- Thread starter nil1996
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hi nil1996! 
|f(x)| = f(x) times sign(f(x))
so you can use the product rule, except where f(x) = 0 (where |f|' won't exist unless f' = 0)
|f(x)| = f(x) times sign(f(x))
so you can use the product rule, except where f(x) = 0 (where |f|' won't exist unless f' = 0)
brmath
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Are you talking about a function of a real or complex variable?