--- a/additional_ipython/quickref.tex	Mon Oct 11 23:03:49 2010 +0530
+++ b/additional_ipython/quickref.tex	Mon Oct 11 23:36:15 2010 +0530
@@ -1,11 +1,15 @@
-Creating a tuple:\\
-{\ex \lstinline|    t = (1, "hello", 2.5)|}
+accessing history:\\
+{\ex \lstinline|    \%hist|}
 
-Accessing elements of tuples:\\
-{\ex \lstinline|    t[index] Ex: t[2]|}
+accessing particular line of history:\\
+{\ex \lstinline|    \%hist line_number|}
 
-Accessing slices of tuples:\\
-{\ex \lstinline|    t[start:stop:step]|}
+accessing particular range of history:\\
+{\ex \lstinline|    \%hist start_line stop_line|}
 
-Swapping values:\\
-{\ex \lstinline|    a, b = b, a|}
+saving history to a file:\\
+{\ex \lstinline|    \%save file_path line_numbers|}
+
+running a script:\\
+{\ex \lstinline|    \%run -i file_path|}
+

--- a/using-sage/questions.rst	Mon Oct 11 23:03:49 2010 +0530
+++ b/using-sage/questions.rst	Mon Oct 11 23:36:15 2010 +0530
@@ -1,17 +1,81 @@
 Objective
 ---------
 
-.. A mininum of 8 questions here. 
+1. How do you find the limit of the function ``x/sin(x)`` as ``x`` tends to
+   ``0`` from the negative side.
+
+   Answer: lim(x/sin(x), x=0, dir="below")
+
+#. Find the third differential of the function ``exp(sin(x)*cos(x^2))``
+ 
+   Answer: diff(exp(sin(x)*cos(x^2), x, 3)
+
+#. Solve the system of linear equations::
+
+     x-2y+3z = 7
+     2x+3y-z = 5
+     x+2y+4z = 9
+
+   Answer::
+
+     A = Matrix([[1, -2, 3], 
+                 [2, 3, -1], 
+                 [1, 2, 4]])
+
+     b = vector([7, 5, 9])
+
+     solve_right(A, b)
+
+#. How do you get the factorized form of ``x^4 - 4x^2 + x^3 + 2x + 7`` 
+
+   Answer::
 
-1. Question 1
-2. Question 2
-3. Question 3
+      factor( x^4 + x^3 - 4*x^2 + 2*x + 7 )
+
+#. list all the primes between 2009 and 2900
+
+   Answer: prime_range(2009, 2901)
+
+#. Which function is used to check primality
+
+   a. isPrime
+   #. isprime
+   #. is_prime
+   #. prime
+
+   Answer: is_prime
+
+#. How do you list all the combinations of ``[1, 2, 3, 4]``
+
+
+   Answer::
+
+     c1 = Combinations([1, 2, 3, 4])
+     c1.list()
+
+#. How do you list all the permutations of ``[1, 3, 2, 3]``
+
+    Answer::
+
+      p1 = Permutations([1, 3, 2, 3])
+      p2.list()
 
 
 Programming
 -----------
 
-.. A minimum of 2 questions here. 
+1. What is the out put of the following code::
+
+     c1 = Combinations([1, 2, 3, 4])
+     c2 = Combinations([1, 2, 4, 3])
+
+     l1 = c1.list()
+     l2 = c2.list()
 
-1. Programming Assignment 1
-2. Programming Assignment 2
+     for i in l2:
+         l1.remove(i)
+
+     print l2
+
+   Answer: []
+