Solve problem 6.

1 files changed, 18 insertions, 0 deletions

diff --git a/problem-6.scm b/problem-6.scm
new file mode 100644
index 0000000..62852a0
--- /dev/null
+++ b/problem-6.scm
@@ -0,0 +1,18 @@
+(use-modules (srfi srfi-41))
+
+(define (square x)
+  (* x x))
+
+(define naturals (stream-from 1))
+
+(define squares
+  (stream-map square naturals))
+
+(define (sum-stream n stream)
+  (stream-fold + 0 (stream-take n stream)))
+
+(define (sum-square-difference n)
+  (- (square (sum-stream n naturals))
+     (sum-stream n squares)))
+
+(sum-square-difference 100)