Evaluate the limit after first finding the sum (as a function of $n$ ) using the summation formulas.
$$\lim _ { n \rightarrow \infty } \sum _ { k = 1 } ^ { n } \left( 4 + \frac { 2 k } { n } \right) ^ { 2 } \left( \frac { 1 } { n } \right)$$

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The Answer of Evaluate the limit after first finding the sum (as a function of $n$ ) using the summation formulas.
$$\lim _ { n \rightarrow \infty } \sum _ { k = 1 } ^ { n } \left( 4 + \frac { 2 k } { n } \right) ^ { 2 } \left( \frac { 1 } { n } \right)$$

Evaluate the Limit After First Finding the Sum (As a Function