1 files changed, 36 insertions, 0 deletions
diff --git a/buch/chapters/80-wahrscheinlichkeit/images/positiv.m b/buch/chapters/80-wahrscheinlichkeit/images/positiv.m
new file mode 100644
index 0000000..4dca950
--- /dev/null
+++ b/buch/chapters/80-wahrscheinlichkeit/images/positiv.m
@@ -0,0 +1,36 @@
+#
+# positiv.m
+#
+# (c) 2021 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule
+#
+N = 10;
+p = 0.2;
+
+A = eye(3) + p * rand(3,3);
+A = [
+ 1, 0.2, 0.2;
+ 0.1, 1, 0.1;
+ 0.05, 0.05, 1
+];
+B = eye(3);
+
+function retval = punkt(x)
+	retval = sprintf("<%.4f,%.4f,%.4f>", x(1), x(3), x(2));
+end
+
+fn = fopen("quadrant.inc", "w");
+for i = (1:N)
+	fprintf(fn, "quadrant(%s,%s,%s)\n",
+		punkt(B(:,1)), punkt(B(:,2)), punkt(B(:,3)))
+	B = B * A;
+end
+
+x = [ 1; 1; 1 ];
+for i = (1:100)
+	x = A * x;
+	x = x / norm(x);
+end
+fprintf(fn, "eigenvektor(<%.4f, %.4f, %.4f>)\n", x(1), x(3), x(2));
+
+
+fclose(fn);