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\[\ \huge \text {LHS:} \sum_{i=0}^{n-1} f(x_i) Δ x \]

\[\ \ \huge \text {RHS:} \sum_{i=1}^{n} f(x_i) Δ x \]

well delta x = (b-a)/n

and what is your f(x)?

I'm not sure what you're asking. I need your function value.

\(\ \Huge \text{Oh, and: } x_i = a+iΔx \)

This isn't helpful without the function. Otherwise the answer will be just theoretical stuff.

And, we haven't even discussed what an integral is in class...

Could you give a description of what your graph is?

It looks something like:|dw:1360464858577:dw|

My confusion is I'm not sure how to use the two summation equations....

And then use the values I know from the graph

@khoala4pham How do I use the sigma equations? Where do they come into this?

Anyone??

How do you know to choose 0,2,4,6,8 and 2,4,6,8,10?

How you got the numbers 2,4,6,8,10

If i runs from 1 to n, so that means i runs 1 to 5...

I'm getting like 2, 5 ...?
x_1= (a=0) + (1)(delta x = 2) = 2
x_2 = (a=1) + (2)( delta x = 2) =5