well, the right-hand sum is
n
∑ f(1+i(4/n))(4/n)
i=1
there's also the left sum and the midpoint sum
Write the Riemann sum to find the area under the graph of the function f(x) = x2 from x = 1 to x = 5.
1. the summation from i equals 1 to n of the product of the quantity squared of 1 plus 5 times i over n and 4 over n
2. the limit as n goes to infinity of the summation from i equals 1 to n of the product of the quantity squared of 1 plus 4 times i over n and 4 over n
3. the summation from i equals 1 to n of the product of the quantity squared of 4 times i over n and 4 over n
4. the limit as n goes to infinity of the summation from i equals 1 to n of the product of i over n quantity squared and 4 over n
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