>>>>> "Thomas" == Thomas Huld <[EMAIL PROTECTED]> writes:
Thomas> On Mon, 23 Nov 1998 13:43:04 -0600 (CST) Yao-Pin Kuo
Thomas> <[EMAIL PROTECTED]> wrote:
>> Hi How can I type cubic root or n-th root in LyX?
Thomas> That's curious, with the version I'm using (lyx 0.12.0) I
Thomas> can't do it either 8-/.
Thomas> You can *always* do it with latex. Write: $\sqrt[y]{x}$ to get
Thomas> the y'th root of the expression x (where x may be an
Thomas> expression of any complexity). Mark the whole thing as
Thomas> LaTeX. This will put the y'th root expression in the text.
Thomas> The trouble (with 0.12.0, at least) is that the math editor is
Thomas> too smart for its own good. If you try to enter this in a math
Thomas> inset LyX will "resolve" the square root as soon as you have
Thomas> finished writing "sqrt" and will put the square brackets
Thomas> *inside* the sqrt. This happens even if you explicitly ask for
Thomas> TeX mode inside the math inset.
The math editor has to parse all the math expressions and, since
optional arguments are not implemented, it fails on \sqrt[]{}... The
only solution is, as mentionned earlier in this thread, something like
defining
\newcommand{\nthroot}[2]{\sqrt[#1]{#2}}
in the preamble, and using that in mathed as Red Text.
JMarc
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