Crosser-XDU
diff --git a/‎docs/da/056.md
+3-1 b/‎docs/da/056.md
+3-1
diff --git a/‎docs/da/059.md
+3-1 b/‎docs/da/059.md
+3-1
diff --git a/‎docs/da/084.md
+3-1 b/‎docs/da/084.md
+3-1
diff --git a/‎docs/da/085.md
+6-2 b/‎docs/da/085.md
+6-2
@@ -21,7 +21,9 @@ plt.show()
 
 ```
 
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)In [3]:
+![](data:image/png;base64,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)
+
+In [3]:
 
 ```py
 # math text