Change of Sign: Decimal Search

You can click and drag the function to translate it. The function expression will automatically update. The 'Next root' button (when visible) will cycle through the number of roots specified in the tiny slider at the bottom left of the window. (The software isn't powerful enough to work out how many roots there are itself!) So, e.g. if your function has 4 roots, change that slider to 4 (4 is the max number of roots the software can handle)