Is there an intuitive way to do it using integration techniques or do I have to memorize this: integral secx - Wolfram|Alpha ?

Any input would be appreciated!

Thanks in advance!

Edit: Nevermind, I forgot that this is one of the integrals I'm supposed to have memorized asln|sec(x) + tan(x)|.

Edit #2: Actually, my problem is because of the interval; how do I evaluate this integral over this specific interval?: http://www.wolframalpha.com/input/?i...om+0+to+pi%2F4