Find the Maximum or the Minimum Value of the Function $f ( x ) = \frac { x } { 4 } \left( 1 - \frac { x } { 4 } \right) + \frac { 5 } { 12 }$

question 17

Essay

Find the maximum or the minimum value of the function $f ( x ) = \frac { x } { 4 } \left( 1 - \frac { x } { 4 } \right) + \frac { 5 } { 12 }$ .

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