Use the Definition of Area to Find the Area of the Region

question 5

Short Answer

Use the definition of area to find the area of the region under the graph of $f$ on $[ a , b ]$ using the indicated choice of $c _ { k }$ .
$f ( x ) = x ^ { 2 } + 5 x + 1 , \quad [ - 1,1 ] , \quad c _ { k }$ is the right endpoint

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