add this week of uebungen

pirms 4 gadiem · 8e829fadf9
--- a/sose2021/algebra/alg6.pdf
+++ b/sose2021/algebra/alg6.pdf
--- a/sose2021/algebra/alg6.xopp
+++ b/sose2021/algebra/alg6.xopp
--- a/sose2021/funktheo/funk6.pdf
+++ b/sose2021/funktheo/funk6.pdf
--- a/sose2021/funktheo/funk6.xopp
+++ b/sose2021/funktheo/funk6.xopp
--- a/sose2021/tut-ana/praesenz-5.pdf
+++ b/sose2021/tut-ana/praesenz-5.pdf
--- a/sose2021/tut-ana/praesenz-6.pdf
+++ b/sose2021/tut-ana/praesenz-6.pdf
--- a/sose2021/tut-ana/praesenz-6.xopp
+++ b/sose2021/tut-ana/praesenz-6.xopp