right endpoint method:
But,
So, we have:
Now, take the limit:
See, the limit?. You should get the same as if you integrate the 'easy' way.
Consider the function .
In this problem you will calculate by using the definition
The summation inside the brackets is which is the Riemann sum where the sample points are chosen to be the right-hand endpoints of each sub-interval.
Calculate for on the interval and write your answer as a function of without any summation signs.
I need to find and Please help!