Update...

Update 12.temporary_ins/04-math-tools/70.systems-of-differential-equations/20.overview/cheatsheet.fr.md

12.temporary_ins/04-math-tools/70.systems-of-differential-equations/20.overview/cheatsheet.fr.md

@@ -11,6 +11,10 @@ lessons:
         slug: from-differential-equations-to-systems-of-differential-equations
         name: OUTIL-MATH : From-differential-equations-to-systems-of-differential-equations
         order: 3
+    -
+        slug: systems-top-down-with-differential-equations-4
+        name: MATH-TOOLS : Top-down and differential equations
+        order: 3
 ---
 
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