claude typos; plotly+scatter3d issue; google analytics

quarto/alternatives/symbolics.qmd

@@ -1,6 +1,8 @@
 # Symbolics.jl
 
+XXX This needs updating! XXX
 
+XXX add https://docs.sciml.ai/SymbolicIntegration/stable/ XXX
 
 
 There are a few options in `Julia` for symbolic math, for example, the `SymPy` package which wraps a Python library. This section describes a collection of native `Julia` packages providing many features of symbolic math.
@@ -238,27 +240,6 @@ w = x^3 + y^3 - 2z^3
 substitute(w, Dict(x=>2, y=>3))
 ```
 
-The `fold` argument can be passed `false` to inhibit evaluation of values. Compare:
-
-
-```{julia}
-ex = 1 + sqrt(x)
-substitute(ex, x=>2), substitute(ex, x=>2, fold=false)
-```
-
-Or
-
-
-```{julia}
-ex = sin(x)
-substitute(ex, x=>π), substitute(ex, x=>π, fold=false)
-```
-
-For the latter, it is more efficient to directly use `Term`, which creates the symbolic expression representing the calling of `sin(π)`:
-
-```{julia}
-Symbolics.Term(sin, [π])
-```
 
 
 ### Simplify