Merge branch 'exercise-checking' into 'main'

Exercise checking

See merge request !54

README-exercises.md

+# A few notes about exercises
+
+Thebe, interactive features, etc. Just a few notes for now, this will eventually be put into a manual.
+
+
+Types of exercises:
+- here a list of things you can and cannot do
+- ...
+- ...
+- want to hide the input code but still allow a student to run it? try writing a function in a cell, then using the function in another cell. can also write a message to the student in the docstring :)
+
+Go back [here](https://gitlab.tudelft.nl/mude/book/-/merge_requests/34#note_190848) and revisit a few things next time Robert/Max meet on campus.
+

book/cookbook/example_gumbel.py

@@ -45,9 +45,9 @@ def check_example(glob):
 """
 Task 0:
 x_1 = 4
-p_e_1 = .1
+p_1 = 1 - .1
 x_2 = 10
-p_e_2 = .01
+p_2 = 1 - .01
 
 Task 1:
 	beta = -(x_2 - x_1) / log(log(p_2) / log(p_1))