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The function ` f(x) = -2 x^3 + 21 x^2 - 36 x + 8 ` has one local minimum and one local maximum.
This function has a local minimum at ` x ` =  
with value  

and a local maximum at ` x ` =  
with value  

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   x  x  √  n√  |   | (   ) π ∞ DNE
   x  √  (   ) π ∞ DNE
( ) ( ] [ ) [ ] —∞ ∞ ∪ DNE
< > ≤ ≥ or All Real Numbers DNE
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