ByRudiXY
Hi everyone, I have another math question. I'm supposed to calculate the definite integral (left). I've been trying to use integration by parts. I've chosen f(x)=ln(x) and g'(x)=x, so far everything's fine. Now I just don't understand why ln(x) simply disappears? In other words, I don't quite understand how to get from the first (right) part of the equation to 1/2(e)^2-[1/4x^2]. Thanks in advance 🙂
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I'm currently practicing completing the square and I know how it works, but I don't really understand why some things are done that way. For example: Why is +3² – 3² = – 3² ? I know this is the binomial formula, but why? You add and subtract immediately, but then it should also be…
ln e = ???
ln 1 =???
Thank you for having noticed xD
… with this (good) choice is:
there
is