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the set of valves x for which f(x)=x^3-6x^27x+10 is increasing in ?? how to solve this

the set of valves x for which f(x)=x^3-6x^27x+10 is increasing in ?? how to solve this
 

Grade:11

1 Answers

Arun
25750 Points
5 years ago
Dear student
 
these type of questions are solved by diffrentiating the function.
 
i.e.
f’(x) = 3x^2 – 12 x + 7
 
as D = b^2- 4 ac is always negative hence f’(x) will always be positive. hence function will be wlways increasing.

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