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I've found that clearing your browser's cache, hard refresh, or signing out and back in usually gets around this issue.
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  ...
Robert Ryan, you can also oftentimes click directly on a result to use it as a new query, this can make it easier to chain queries together.
I like some of the more subtle ones.  Like: 88 mph