Question from GR9768 question (1)

[ajf]

I'm just starting my review of math for the GRE subject test. Anyway, the first question on GR9768 shows

F(x) = integrate log(t) from e to x

I think the answer is

xlog(x) - x

However, the answer key shows that it is (c) which is

log(x)

Can someone point out the correct answer and why? Thanks in advance for the help.

[lime]

Read the question carefully. It was asking about the derivative - F'(x), not F(x).

[ajf]

Well, this is embarrassing. One lesson that I can learn from this is to read the questions carefully. Thank you for the help.

[diogenes]

Hey, at the very least it made for something interesting to think about over lunch (for me anyway).