WHAT IS THE ORIGINAL FUNCTION OF THIS DERIVATIVE?

Question

steve816 · Answer

$$\large f'(x)=\frac{ (\cos(x))^2(x^2-x-2.1) }{ \sqrt{x^2+1} }$$

chpatterson · Answer

@.Sam.

steve816 · Answer

Thank you for helping my question get attention @chpatterson

chpatterson · Answer

No problem

jim_thompson5910 · Answer

@steve816 you said that `I am allowed to use a calculator` so I'd definitely take advantage. Doing this by hand would be a pain. 

Rule: The local extrema of `f ' (x)` correspond to the points of inflection on `f(x)`

Use your calculator to find the approximate extrema (local min and max) of `f ' (x)`

jim_thompson5910 · Answer

If your teacher won't let you do that, then you'll have to use the product and quotient rule

518nad · Answer

|dw:1477616628419:dw|

518nad · Answer

its similar behavior to that function

518nad · Answer

like 8 or 9

518nad · Answer

x^2 cos^2(x) has the same inflection points as cos^2(x)