Answer :

local max. value is 0 at each of the points x = 1 and x = 1 and local min. value is at

F(x)=-(x-1)32(x+1)-3(x-1)2(x+1)2=0



Since, f||(1) and f||(-1) <0 , 1 and -1 are the points of local max.


F||(-)>0, - is the point of local min.


F(1)=f(-1)=0


Also,


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