f(x)=|2x-4|
При x < 2
|2x-4|=4-2x
f`(x)=-2
1/3 ∈(-∝;2)
Значит f`(x)=-2
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f(x)=|2x-4|
При x < 2
|2x-4|=4-2x
f`(x)=-2
1/3 ∈(-∝;2)
Значит f`(x)=-2