AOD

Q23 ans c

e is point of minima as f’ changes sign from + to 
.so d is correct

@athakur
And I think option a is also incorrect because
alpha and beta are also extreme points ...
As after alpha f'(x) is ve f(x) is decreasing
And similarly for beta
Please tell

@nishantthakre
the slope of graph now represents f” . slope changes two places, so two inflexion point.

@ashishdeosingh
Please tell if I am right about option a

@nishantthakre
between e and d, f’ graph is concave up, so its double derivative should be postive, hence
f”’ is +

@nishantthakre
about a ,c,e the graph of f’ changes sign so three extremum point.

@nishantthakre
extrem points are those about which f’ changes sign

Understood 👍

@nishantthakre
then ur q is rong, as none. of options in correct