Add optional arguments to \sqrt

Summary:
Use the TeX definitions of `\root` to get the optional `\sqrt`
argument in the right place. Also add the MathML version.

Fixes #48

Test Plan:
 - `make test`
 - See that the images look good

Reviewers: kevinb, alpert

Reviewed By: alpert

Differential Revision: https://phabricator.khanacademy.org/D17236
This commit is contained in:
Emily Eisenberg
2015-04-22 15:26:10 -07:00
parent e239f6cc84
commit c48de165e8
7 changed files with 58 additions and 13 deletions

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