diff -r 0471f8694075 -r 9fbd2a71fef2 day1/exercise/roots.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/day1/exercise/roots.py	Thu Oct 08 19:06:57 2009 +0530
@@ -0,0 +1,28 @@
+import math
+
+def linspace(a, b, N):
+    lns = []
+    step = (float(b) - float(a)) / float(N - 1)
+    print step
+    for i in range(N):
+        lns.append(a + i*step)
+
+    return lns
+
+def sinsin_func():
+    x = linspace(0, 5, 11)
+    sin_list = []
+    for i in x:
+        sin_list.append(math.sin(i) + math.sin(10*i))
+
+    return sin_list
+
+def find_root_range():
+    sin_list = sinsin_func()
+    for i, sins in enumerate(sin_list):
+        if (sin_list[i] > 0 and sin_list[i+1] < 0) or (sin_list[i] > 0 and sin_list[i+1] < 0):
+            print "Roots lie between: %f and %f" % (sin_list[i], sin_list[i+1])
+        if sin_list[i] == 0:
+            print "%f is the root" % sin_list[i]
+
+find_root_range()