00:01
For this problem, we want to calculate the right remun sum for the function f of x is equal to 3x minus 1, for x values in the closed interval negative 6 to 4.
00:09
So for the right remand sum, r sub n, this is equal to delta x times f of x sub 1 plus f of x and 2, and so on until f of x sub n, where x subn are endpoints, in particular right endpoints of the sub 1, intervals, and delta x is equal to b minus a over n.
00:36
So if you are to find the right green one sum for five sub intervals, let's say n equals 5, then r sub 5 is equal to delta x times f of x of 1 plus f of x of 2 plus f of x of 3, plus f of x of 4 plus f of x 5.
01:00
So first you want to get delta x, delta x is equal to 4 minus negative 6 over n, which is 5, that's 10 over 5 or 2.
01:10
So we have 2 times f of x of 1 will be 2 units from negative 6, so it'll be negative 4, and then f of x of 2 will be f of negative 2, and then f of 0 plus...