Find the point(s) on the graph of $f$ where the tangent line is horizontal. $f ( x ) = x ^ { 2 } e ^ { - x }$
A) $( 0,0 ) , \left( 2 , \frac { 2 ^ { 2 } } { e ^ { 2 } } \right)$
B) $\left( 1 , \frac { 1 } { e } \right)$
C) $( 0,0 )$
D) $\left( 2 , \frac { 2 ^ { 2 } } { e ^ { 2 } } \right)$

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The Answer of Find the point(s) on the graph of $f$ where the tangent line is horizontal. $f ( x ) = x ^ { 2 } e ^ { - x }$
A) $( 0,0 ) , \left( 2 , \frac { 2 ^ { 2 } } { e ^ { 2 } } \right)$
B) $\left( 1 , \frac { 1 } { e } \right)$
C) $( 0,0 )$
D) $\left( 2 , \frac { 2 ^ { 2 } } { e ^ { 2 } } \right)$

Find the Point(s) on the Graph Of fff Where the Tangent Line Is Horizontal

Find the Point(s) on the Graph Of $f$ Where the Tangent Line Is Horizontal