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faltersainse [42]
3 years ago
11

Look at the function f(x) = x3 - 4 x. which describes an interval in which the function is increasing?

Mathematics
1 answer:
Bad White [126]3 years ago
5 0
Differentiate it
 get  f ' (x)=3x^2-4
put 3x^2-4=0
x=2/√3,-2/√3
so interval 
x∈(-2/√3,2/√3)
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