Using plain english as you did in your post works:

Use Simpson's Rule with n=10 to approximate ?1/x dx from x=1 to 2

http://www.wolframalpha.com/input/?i=Use+Simpson%27s+Rule+with+n%3D10+to+approximate+%E2%88%AB1%2Fx+dx+from+x%3D1+to+2If there are any examples that you tried that did not work, please send in some feedback and the W|A team will check it out.