Find the points at which the function math xmlns=http://www.w3.org/1998/Math/MathMLmif/mi/math g...

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Find the points at which the function math xmlns=http://www.w3.org/1998/Math/MathMLmif/mi/math given by math xmlns=http://www.w3.org/1998/Math/MathMLmif/mimo(/momix/mimo)/momo=/momo(/momix/mimo-/momn2/mnmsupmo)/momn4/mn/msupmo(/momix/mimo+/momn1/mnmsupmo)/momn3/mn/msup/math  has
(i) local maxima
(ii) local minima
(iii) point of inflexion
 
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