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Course: Test Everything QE Sandbox > Unit 8
Lesson 1: Perseus Corner CasesMathJax fallback checks
An article that triggers the KaTeX to MathJax render fallback.
This expression using cube root syntax is unsupported in Perseus and will trigger a fallback to MathJax rendering.
Source
\root3 of xResult
Verification
To verify this, you'll need to use the browser dev tools and inspect the rendered result. If you don't see anything under Result, then the fallback failed. When you inspect the rendered Result, the HTML element should have a
MathJax- attribute on it.