Write the sum in expanded form.
I don't know where to start with...
Is expanded form just writing it out?
Previous ones, I solved them by expansion and getting a number as an answer.
This one, I think maybe just expansion?...
Can you post an example of a previous one where you were able to solve for a numerical answer? And is there any more information about this problem? Any definition of f(x), or delta-x?
The first two are the ones I solved.
The book has no more information, just this one.
Hmm. Maybe others can see something we're missing, but I'd just write it out as a sum, showing the first few terms, then some ellipses, then the nth term. Do you submit the answer to an automated checking probram online, or send it to a human for checking? If it's an automated checker, you'd need to figure out how many terms before the ellipses it expects...
My instructor will check the answer...I don't think I should use ellipses in the answer. Just expansion. I have no idea what to start with.
This means to write the terms in the sum: f(x1)[itex]\Delta x_1[/itex] + f(x2)[itex]\Delta x_2[/itex] + and so on. Since n is not given, the usual practice is to write a few terms, then + ... + <last term>.
Since you don't know n, you have to use an ellipsis in your answer.
Oh, I see now, thank you all a lot. You are right, I will use ellipsis.
Separate names with a comma.