| On some browsers, some of the typesetting symbols used may not appear as desired. In particular, the square root sign may appear as Ö because the browser does not recognize the symbol. This is a rare occurance and it seems to only happen on Unix machines. |
| Even if the browser does recognize the square root symbol, it will appear without the horizontal line on top (that is, it appears more like a checkmark). Thus, if you see an expression like Ö7, it means the square root of 7. (This problem does not apply to the text inside the tutorial applets.) |
| Also note that quite often an expression is raised to the power of 1/2 (i.e. Öx = x½). This is equivalent to a square root symbol but the exponent is used more often for larger expressions because it is more convenient.
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