One of my xaringan slide has the following code, but incremental does not work properly with $$ equation $$. Wondering what do I miss here.
# Multiple regression
#### It is only when:
$$y=\beta_0+\beta_1 x + u\;\; \text{with}\;\; x\perp u$$
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#### Very strong with $non\text{-}experimental$ data.
This generates the following: